Document:

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                                                                    EXHIBIT 10.2

                              ADVISORY AGREEMENT

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                              ADVISORY AGREEMENT

     THIS ADVISORY AGREEMENT, dated as of January 30, 2001, is between WELLS
REAL ESTATE INVESTMENT TRUST, INC., a Maryland corporation (the "Company"), and
WELLS CAPITAL, INC., a Georgia corporation (the "Advisor").

                              W I T N E S S E T H

     WHEREAS, the Company has issued shares of its common stock, par value $.01,
to the public, has registered with the Securities and Exchange Commission
certain additional shares of its common stock to be offered to the public
("Shares") and may subsequently issue securities other than such Shares
("Securities");

     WHEREAS, the Company intends to continue to qualify as a REIT (as defined
below), and to invest its funds in investments permitted by the terms of the
Company's Articles of Incorporation and Sections 856 through 860 of the Code (as
defined below);

     WHEREAS, the Company desires to avail itself of the experience, sources of
information, advice, assistance and certain facilities available to the Advisor
and to have the Advisor undertake the duties and responsibilities hereinafter
set forth, on behalf of, and subject to the supervision of, the Board of
Directors of the Company all as provided herein; and

     WHEREAS, the Advisor is willing to undertake to render such services,
subject to the supervision of the Board of Directors, on the terms and
conditions hereinafter set forth.

     NOW, THEREFORE, in consideration of the foregoing and of the mutual
covenants and agreements contained herein, the parties hereto agree as follows:

     1.  Definitions.  As used in this Advisory Agreement (the "Agreement"), the
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following terms have the definitions hereinafter indicated:

     Acquisition Expenses.  Any and all expenses incurred by the Company, the
Advisor, or any Affiliate of either in connection with the selection,
acquisition or development of any Property, whether or not acquired, including,
without limitation, legal fees and expenses, travel and communications expenses,
costs of appraisals, nonrefundable option payments on property not acquired,
accounting fees and expenses, and title insurance premiums.

     Acquisition Fees.  Any and all fees and commissions, exclusive of
Acquisition Expenses, paid by any person or entity to any other person or entity
(including any fees or commissions paid by or to any Affiliate of the Company or
the Advisor) in connection with purchase, development or construction of any
Property, including, without limitation, real estate commissions, acquisition
fees, finder's fees, selection fees, nonrecurring management fees, consulting
fees, loan fees, points, or any other fees or commissions of a similar nature.

     Advisor.  Wells Capital, Inc., a Georgia corporation, any successor advisor
to the Company, or any person or entity to which Wells Capital, Inc. or any
successor advisor subcontracts substantially all of its functions.
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     Affiliate or Affiliated.  As to any individual, corporation, partnership,
trust or other association (other than the Excess Shares Trust), (i) any Person
or entity directly or indirectly; through one or more intermediaries
controlling, controlled by, or under common control with another person or
entity; (ii) any Person or entity, directly or indirectly owning or controlling
ten percent (10%) or more of the outstanding voting securities of another Person
or entity; (iii) any officer, director, partner, or trustee of such Person or
entity; (iv) any Person ten percent (10%) or more of whose outstanding voting
securities are directly or indirectly owned, controlled, or held, with power to
vote, by such other Person; and (v) if such other Person or entity is an
officer, director, partner, or trustee of a Person or entity, the Person or
entity for which such Person or entity acts in any such capacity.

     Appraised Value.  Value according to an appraisal made by an Independent
Appraiser.

     Articles of Incorporation.  The Articles of Incorporation of the Company
under Title 2 of the Corporations and Associations Article of the Annotated Code
of Maryland, as amended from time to time.

     Average Invested Assets.  For a specified period, the average of the
aggregate book value of the assets of the Company invested, directly or
indirectly, in Properties and Loans secured by real estate before reserves for
depreciation or bad debts or other similar non-cash reserves, computed by taking
the average of such values at the end of each month during such period.

     Board of Directors or Board.  The persons holding such office, as of any
particular time, under the Articles of Incorporation of the Company, whether
they be the Directors named therein or additional or successor Directors.

     Bylaws.  The bylaws of the Company, as the same are in effect from time to
time.

     Cash from Financings.  Net cash proceeds realized by the Company from the
financing of Company Property or from the refinancing of any Company
indebtedness.

     Cash from Sales.  Net cash proceeds realized by the Company from the sale,
exchange or other disposition of any of its assets after deduction of all
expenses incurred in connection therewith. Cash from Sales shall not include
Cash from Financings.

     Cash from Sales and Financings.  The total sum of Cash from Sales and Cash
from Financings.

     Cause.  With respect to the termination of this Agreement, fraud, criminal
conduct, willful misconduct or willful or negligent breach of fiduciary duty by
the Advisor, breach of this Agreement, a default by the Sponsor under the
guarantee by the Sponsor to the Company or the bankruptcy of the Sponsor.

     Code.  Internal Revenue Code of 1986, as amended from time to time, or any
successor statute thereto. Reference to any provision of the Code shall mean
such provision as in effect from time to time, as the same may be amended, and
any successor provision thereto, as interpreted by any applicable regulations as
in effect from time to time.

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     Company.  Wells Real Estate Investment Trust, Inc., a corporation organized
under the laws of the State of Maryland.

     Company Property.  Any and all property, real, personal or otherwise,
tangible or intangible, which is transferred or conveyed to the Company or the
Partnership (including all rents, income, profits and gains therefrom), and
which is owned or held by, or for the account of, the Company or the
Partnership.

     Competitive Real Estate Commission.  A real estate or brokerage commission
for the purchase or sale of property which is reasonable, customary, and
competitive in light of the size, type, and location of the property. The total
of all real estate commissions paid by the Company to all Persons (including the
Subordinated Disposition Fee payable to the Advisor) in connection with any Sale
of one or more of the Company's Properties shall not exceed the lesser of (i) a
Competitive Real Estate Commission or (ii) 6% of the gross sales price of the
Property or Properties.

     Contract Purchase Price.  The amount actually paid or allocated (as of the
date of purchase) to the purchase, development, construction or improvement of
Property, exclusive of Acquisition Fees and Acquisition Expenses.

     Contract Sales Price.  The total consideration received by the Company for
the sale of a Company Property.

     Cumulative Return.  For the period for which the calculation is being made,
the percentage resulting from dividing (A) the total Dividends paid on each
Dividends distribution date during such period (without regard to Dividends paid
out of Cash from Sales and Financings), by (B) the product of (i) the average
Invested Capital for such period (calculated on a daily basis), and (ii) the
number of years (including fractions thereof) elapsed during such period.

     Director.  A member of the Board of Directors of the Company.

     Dividends.  Any dividends or other distributions of money or other property
by the Company to owners of Shares, including distributions that may constitute
a return of capital for federal income tax purposes.

     Equity Interest.  The stock of or other interests in, or warrants or other
rights to purchase the stock of or other interests in, any entity that has
borrowed money from the Company or that is a tenant of the Company or that is a
parent or controlling Person of any such borrower or tenant.

     Equity Shares.  Transferable shares of beneficial interest of the Company
of any class or series, including common shares or preferred shares.

     Good Reason.  With respect to the termination of this Agreement, (i) any
failure to obtain a satisfactory agreement from any successor to the Company to
assume and agree to perform the Company's obligations under this Agreement; or
(ii) any material breach of this Agreement of any nature whatsoever by the
Company.

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     Gross Proceeds.  The aggregate purchase price of all Shares sold for the
account of the Company through an Offering, without deduction for Selling
Commissions, volume discounts, the marketing support fee and due diligence
expense reimbursement or Organization and Offering Expenses. For the purpose of
computing Gross Proceeds, the purchase price of any Share for which reduced
Selling Commissions are paid to the Managing Dealer or a Soliciting Dealer
(where net proceeds to the Company are not reduced) shall be deemed to be
$10.00.

     Independent Appraiser.  A qualified appraiser of real estate as determined
by the Board. Membership in a nationally recognized appraisal society such as
the American Institute of Real Estate Appraisers ("M.A.I.") or the Society of
Real Estate Appraisers ("S.R.E.A.") shall be conclusive evidence of such
qualification.

     Independent Director.  A Director who is not and within the last two years
has not been directly or indirectly associated with the Advisor by virtue of (i)
ownership of an interest in the Advisor or its Affiliates, (ii) employment by
the Advisor or its Affiliates, (iii) service as an officer or director of the
Advisor or its Affiliates, (iv) performance of services, other than as a
Director, for the Company, (v) service as a director or trustee of more than
three real estate investment trusts advised by the Advisor, or (vi) maintenance
of a material business or professional relationship with the Advisor or any of
its Affiliates. A business or professional relationship is considered material
if the gross revenue derived by the Director from the Advisor and Affiliates
exceeds 5.0% of either the Director's annual gross revenue during either of the
last two years or the Director's net worth on a fair market value basis. An
indirect relationship shall include circumstances in which a Director's spouse,
parents, children, siblings, mothers- or fathers-in-law, sons- or daughters-in-
law, or brothers- or sisters-in-law is or has been associated with the Advisor,
any of its Affiliates, or the Company.

     Independent Expert.  A person or entity with no material current or prior
business or personal relationship with the Advisor or the Directors and who is
engaged to a substantial extent in the business of rendering opinions regarding
the value of assets of the type held by the Company.

     Invested Capital.  The amount calculated by multiplying the total number of
Shares purchased by stockholders by the issue price, reduced by the portion of
any Dividend that is attributable to Net Sales Proceeds and by any amounts paid
by the Company to repurchase Shares pursuant to the Company's plan for
redemption of Shares.

     Joint Ventures.  The joint venture or general partnership arrangements in
which the Company or the Partnership is a co-venturer or general partner which
are established to acquire Properties.

     Listing.  The listing of the Shares of the Company on a national securities
exchange or over-the-counter market.

     Managing Dealer.  Wells Investment Securities, Inc., an Affiliate of the
Advisor, or such entity selected by the Board of Directors to act as the
managing dealer for an Offering. Wells Investment Securities, Inc. is a member
of the National Association of Securities Dealers, Inc.

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     Net Income.  For any period, the total revenues applicable to such period,
less the total expenses applicable to such period excluding additions to
reserves for depreciation, bad debts or other similar non-cash reserves;
provided, however, Net Income for purposes of calculating total allowable
Operating Expenses (as defined herein) shall exclude the gain from the sale of
the Company's assets.

     Net Sales Proceeds.  In the case of a transaction described in clause (i)
(A) of the definition of Sale, the proceeds of any such transaction less the
amount of all real estate commissions and closing costs paid by the Company. In
the case of a transaction described in clause (i) (B) of such definition, Net
Sales Proceeds means the proceeds of any such transaction less the amount of any
legal and other selling expenses incurred in connection with such transaction.
In the case of a transaction described in clause (i) (C) of such definition, Net
Sales Proceeds means the proceeds of any such transaction actually distributed
to the Company from the Joint Venture. In the case of a transaction or series of
transactions described in clause (i) (D) of the definition of Sale, Net Sales
Proceeds means the proceeds of any such transaction less the amount of all
commissions and closing costs paid by the Company. In the case of a transaction
described in clause (ii) of the definition of Sale, Net Sales Proceeds means the
proceeds of such transaction or series of transactions less all amounts
generated thereby and reinvested in one or more Properties within 180 days
thereafter and less the amount of any real estate commissions, closing costs,
and legal and other selling expenses incurred by or allocated to the Company in
connection with such transaction or series of transactions. Net Sales Proceeds
shall also include, in the case of any Property consisting of a building only,
any amounts that the Company determines, in its discretion, to be economically
equivalent to proceeds of a Sale. Net Sales Proceeds shall not include any
reserves established by the Company in its sole discretion.

     Offering.  Any public offering of Shares pursuant to a Prospectus which is
registered with the SEC.

     Operating Expenses.  All costs and expenses incurred by the Company, as
determined under generally accepted accounting principles, which in any way are
related to the operation of the Company or to Company business, including
advisory fees, but excluding (i) the expenses of raising capital such as
Organizational and Offering Expenses, legal, audit, accounting, underwriting,
brokerage, listing, registration, and other fees, printing and other such
expenses and tax incurred in connection with the issuance, distribution,
transfer, registration and Listing of the Shares, (ii) interest payments, (iii)
taxes, (iv) non-cash expenditures such as depreciation, amortization and bad
loan reserves, (v) the Advisor's subordinated 10% share of Net Sales Proceeds,
(vi) the Subordinated Incentive Fee, (vii) the Property Management Fee and
(viii) Acquisition Fees and Acquisition Expenses, real estate commissions on the
sale of property, and other expenses connected with the acquisition, and
ownership of real estate interests, mortgage loans or other property (such as
the costs of foreclosure, insurance premiums, legal services, maintenance,
repair and improvement of property).

     Organizational and Offering Expenses.  Any and all costs and expenses,
other than selling commissions and the 2.5% dealer manager fee, incurred by the
Advisor or any Affiliate in connection with the formation, qualification and
registration of the Company and the marketing and distribution of its Shares,
including, without limitation, the following: legal, accounting and escrow fees;
printing, amending, supplementing, mailing and distributing costs; filing,

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registration and qualification fees and taxes; telegraph and telephone costs;
and all advertising and marketing expenses, including the costs related to
investor and broker-dealer sales meetings. The Organizational and Offering
Expenses paid by the Company in connection with any Offering will not exceed
3.0% of the Gross Proceeds raised in such Offering.

     Partnership.  Wells Operating Partnership, L.P., a Delaware limited
partnership formed to own and operate properties on behalf of the Company.

     Person.  An individual, corporation, partnership, estate, trust (including
a trust qualified under Section 401(a) or 501(c) (17) of the Code), a portion of
a trust permanently set aside for or to be used exclusively for the purposes
described in Section 642(c) of the Code, association, private foundation within
the meaning of Section 509(a) of the Code, joint stock company or other entity,
or any government or any agency or political subdivision thereof.

     Property or Properties.  (i) The real properties, including the buildings
located thereon, or (ii) the real properties only, or (iii) the buildings only,
which are acquired by the Company, either directly or through joint venture
arrangements or other partnerships.

     Prospectus.  "Prospectus" has the meaning set forth in Section 2(10) of the
Securities Act of 1933, as amended (the "Securities Act"), including a
preliminary Prospectus, an offering circular as described in Rule 256 of the
General Rules and Regulations under the Securities Act or, in the case of an
intrastate offering, any document by whatever name known, utilized for the
purpose of offering and selling securities to the public.

     Real Estate Asset Value.  The amount actually paid or allocated to the
purchase, development, construction or improvement of a Property, exclusive of
Acquisition Fees and Acquisition Expenses.

     Registration Statement.  The most currently filed Registration Statement on
Form S-11 with the Securities and Exchange Commission, of which the Prospectus
is a part.

     REIT.  A "real estate investment trust" under Sections 856 through 860 of
the Code.

     Sale or Sales.  (i) Any transaction or series of transactions whereby: (A)
the Company or the Partnership sells, grants, transfers, conveys, or
relinquishes its ownership of any Property or portion thereof, including the
lease of any Property consisting of the building only, and including any event
with respect to any Property which gives rise to a significant amount of
insurance proceeds or condemnation awards; (B) the Company or the Partnership
sells, grants, transfers, conveys, or relinquishes its ownership of all or
substantially all of the interest of the Company or the Partnership in any Joint
Venture in which it is a co-venturer or partner; or (C) any Joint Venture in
which the Company or the Partnership as a co-venturer or partner sells, grants,
transfers, conveys, or relinquishes its ownership of any Property or portion
thereof, including any event with respect to any Property which gives rise to
insurance claims or condemnation awards, but (ii) not including any transaction
or series of transactions specified in clause (i) (A), (i) (B), or (i) (C) above
in which the proceeds of such transaction or series of transactions are
reinvested in one or more Properties within 180 days thereafter.

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     Securities.  Any Equity Shares, Excess Shares, as such term is defined in
the Company's Articles of Incorporation, any other stock, shares or other
evidences of equity or beneficial or other interests, voting trust certificates,
bonds, debentures, notes or other evidences of indebtedness, secured or
unsecured, convertible, subordinated or otherwise, or in general any instruments
commonly known as "securities" or any certificates of interest, shares or
participations in, temporary or interim certificates for, receipts for,
guarantees of, or warrants, options or rights to subscribe to, purchase or
acquire, any of the foregoing.

     Shares.  Any shares of the Company's common stock, par value $.01 per
share, previously issued by the Company pursuant to an effective registration
statement and shares currently registered with the Securities and Exchange
Commission pursuant to the Registration Statement.

     Soliciting Dealers.  Broker-dealers who are members of the National
Association of Securities Dealers, Inc., or that are exempt from broker-dealer
registration, and who, in either case, have executed participating broker or
other agreements with the Managing Dealer to sell Shares.

     Sponsor.  Any Person directly or indirectly instrumental in organizing,
wholly or in part, the Company or any Person who will control, manage or
participate in the management of the Company, and any Affiliate of such Person.
Not included is any Person whose only relationship with the Company is that of
an independent property manager of Company assets, and whose only compensation
is as such. Sponsor does not include wholly independent third parties such as
attorneys, accountants, and underwriters whose only compensation is for
professional services.

     Stockholders.  The record holders of the Company's Shares as maintained in
the Company's books and records.

     Stockholders' 8.0% Return.  As of each date, an aggregate amount equal to
an 8.0% cumulative, noncompounded, annual return on Invested Capital.

     Subordinated Disposition Fee.  The Subordinated Disposition Fee as defined
in Paragraph 9(b).

     Subordinated Incentive Fee.  The fee payable to the Advisor under certain
circumstances if the Shares are listed on a national securities exchange or
over-the-counter market as defined in Paragraph 9(d).

     Subordinated Share of Net Sale Proceeds.  The Subordinated Share of Net
Sales Proceeds as defined in Paragraph 9(c).

     Termination Date.  The date of termination of the Agreement.

     Total Property Cost.  With regard to any Company Property, an amount equal
to the sum of the Real Estate Asset Value of such Property plus the Acquisition
Fees and Acquisition Expenses paid in connection with such Property.

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     2%/25% Guidelines.  The requirement pursuant to the guidelines of the North
American Securities Administrators Association, Inc. that, in any 12 month
period, total Operating Expenses not exceed the greater of 2% of the Company's
Average Invested Assets during such 12 month period or 25% of the Company's Net
Income over the same 12 month period.

     Valuation.  An estimate of value of the assets of the Company as determined
by an Independent Expert.

     2.  Appointment.  The Company hereby appoints the Advisor to serve as its
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advisor on the terms and conditions set forth in this Agreement, and the Advisor
hereby accepts such appointment.

     3.  Duties of the Advisor.  The Advisor undertakes to use its best efforts
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to present to the Company potential investment opportunities and to provide a
continuing and suitable investment program consistent with the investment
objectives and policies of the Company as determined and adopted from time to
time by the Board. In performance of this undertaking, subject to the
supervision of the Board and consistent with the provisions of the Prospectus,
Articles of Incorporation and Bylaws of the Company, the Advisor shall, either
directly or by engaging an Affiliate:

     (a)  serve as the Company's investment and financial advisor and provide
          research and economic and statistical data in connection with the
          Company's assets and investment policies;

     (b)  provide the daily management of the Company and perform and supervise
          the various administrative functions reasonably necessary for the
          management of the Company;

     (c)  maintain and preserve the books and records of the Company, including
          stock books and records reflecting a record of the Stockholders and
          their ownership of the Company's uncertificated Shares and acting as
          transfer agent for the Company's uncertificated Shares;

     (d)  investigate, select, and, on behalf of the Company, engage and conduct
          business with such Persons as the Advisor deems necessary to the
          proper performance of its obligations hereunder, including but not
          limited to consultants, accountants, correspondents, lenders,
          technical advisors, attorneys, brokers, underwriters, corporate
          fiduciaries, escrow agents, depositaries, custodians, agents for
          collection, insurers, insurance agents, banks, builders, developers,
          property owners, mortgagors, and any and all agents for any of the
          foregoing, including Affiliates of the Advisor, and Persons acting in
          any other capacity deemed by the Advisor necessary or desirable for
          the performance of any of the foregoing services, including but not'
          limited to entering into contracts in the name of the Company with any
          of the foregoing;

     (e)  consult with the officers and the Board of the Company and assist the
          Board in the formulation and implementation of the Company's financial
          policies, and, as

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          necessary, furnish the Board with advice and recommendations with
          respect to the making of investments consistent with the investment
          objectives and policies of the Company and in connection with any
          borrowings proposed to be undertaken by the Company;

     (f)  subject to the provisions of Paragraphs 3(g) and 4 hereof, (i) locate,
          analyze and select potential investments in Properties, (ii) structure
          and negotiate the terms and conditions of transactions pursuant to
          which investment in Properties will be made; (iii) make investments in
          Properties on behalf of the Company or the Partnership in compliance
          with the investment objectives and policies of the Company; (iv)
          arrange for financing and refinancing and make other changes in the
          asset or capital structure of, and dispose of, reinvest the proceeds
          from the sale of, or otherwise deal with the investments in, Property;
          and (v) enter into leases and service contracts for Company Property
          and, to the extent necessary, perform all other operational functions
          for the maintenance and administration of such Company Property;

     (g)  provide the Board with periodic reports regarding prospective
          investments in Properties;

     (h)  obtain the prior approval of the Board (including a majority of all
          Independent Directors) for any and all investments in Properties;

     (i)  negotiate on behalf of the Company with banks or lenders for loans to
          be made to the Company, and negotiate on behalf of the Company with
          investment banking firms and broker-dealers or negotiate private sales
          of Shares and Securities or obtain loans for the Company, but in no
          event in such a way so that the Advisor shall be acting as broker-
          dealer or underwriter; and provided, further, that any fees and costs
          payable to third parties incurred by the Advisor in connection with
          the foregoing shall be the responsibility of the Company;

     (j)  obtain reports (which may be prepared by the Advisor or its
          Affiliates), where appropriate, concerning the value of investments or
          contemplated investments of the Company in Properties;

     (k)  from time to time, or at any time reasonably requested by the Board,
          make reports to the Board of its performance of services to the
          Company under this Agreement;

     (l)  provide the Company with all necessary cash management services;

     (m)  do all things necessary to assure its ability to render the services
          described in this Agreement;

     (n)  deliver to or maintain on behalf of the Company copies of all
          appraisals obtained in connection with the investments in Properties;
          and

     (o)  notify the Board of all proposed material transactions before they are
          completed.

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     4.  Authority of Advisor.
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     (a) Pursuant to the terms of this Agreement (including the restrictions
included in this Paragraph 4 and in Paragraph 7), and subject to the continuing
and exclusive authority of the Board over the management of the Company, the
Board hereby delegates to the Advisor the authority to (1) locate, analyze and
select investment opportunities, (2) structure the terms and conditions of
transactions pursuant to which investments will be made or acquired for the
Company or the Partnership, (3) acquire Properties in compliance with the
investment objectives and policies of the Company, (4) arrange for financing or
refinancing Property, (5) enter into leases and service contracts for the
Company's Property, including oversight of Affiliated companies that perform
property management services for the Company, (6) oversee non-affiliated
property managers and other non-affiliated Persons who perform services for the
Company; and (7) undertake accounting and other record-keeping functions at the
Property level.

     (b) Notwithstanding the foregoing, any investment in Properties, including
any acquisition of Property by the Company or the Partnership (as well as any
financing acquired by the Company or the Partnership in connection with such
acquisition), will require the prior approval of the Board.

     (c) If a transaction requires approval by the Independent Directors, the
Advisor will deliver to the Independent Directors all documents required by them
to properly evaluate the proposed investment in the Property.

     The prior approval of a majority of the Independent Directors and a
majority of the Board not otherwise interested in the transaction will be
required for each transaction with the Advisor or its Affiliates.

     The Board may, at any time upon the giving of notice to the Advisor, modify
or revoke the authority set forth in this Paragraph 4. If and to the extent the
Board so modifies or revokes the authority contained herein, the Advisor shall
henceforth submit to the Board for prior approval such proposed transactions
involving investments in Property as thereafter require prior approval, provided
however, that such modification or revocation shall be effective upon receipt by
the Advisor and shall not be applicable to investment transactions to which the
Advisor has committed the Company prior to the date of receipt by the Advisor of
such notification.

     5.  Bank Accounts.  The Advisor may establish and maintain one or more bank
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accounts in its own name for the account of the Company or in the name of the
Company and may collect and deposit into any such account or accounts, and
disburse from any such account or accounts, any money on behalf of the Company,
under such terms and conditions as the Board may approve, provided that no funds
shall be commingled with the funds of the Advisor; and the Advisor shall from
time to time render appropriate accountings of such collections and payments to
the Board and to the auditors of the Company.

     6.  Records; Access.  The Advisor shall maintain appropriate records of all
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its activities hereunder and make such records available for inspection by the
Board and by counsel, auditors and authorized agents of the Company, at any time
or from time to time during normal

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business hours. The Advisor shall at all reasonable times have access to the
books and records of the Company.

     7.  Limitations on Activities.  Anything else in this Agreement to the
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contrary notwithstanding, the Advisor shall refrain from taking any action
which, in its sole judgment made in good faith, would (a) adversely affect the
status of the Company as a REIT, (b) subject the Company to regulation under the
Investment Company Act of 1940, as amended, or (c) violate any law, rule,
regulation or statement of policy of any governmental body or agency having
jurisdiction over the Company, its Shares or its Securities, or otherwise not be
permitted by the Articles of Incorporation or Bylaws of the Company, except if
such action shall be ordered by the Board, in which case the Advisor shall
notify promptly the Board of the Advisor's judgment of the potential impact of
such action and shall refrain from taking such action until it receives further
clarification or instructions from the Board.  In such event the Advisor shall
have no liability for acting in accordance with the specific instructions of the
Board so given. Notwithstanding the foregoing, the Advisor, its directors,
officers, employees and stockholders, and stockholders, directors and officers
of the Advisor's Affiliates shall not be liable to the Company or to the Board
or stockholders for any act or omission by the Advisor, its directors, officers
or employees, or stockholders, directors or officers of the Advisor's Affiliates
except as provided in Paragraphs 20 and 21 of this Agreement.

     8.  Relationship with Directors.  Directors, officers and employees of the
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Advisor or an Affiliate of the Advisor or any corporate parents of an Affiliate,
or directors, officers or stockholders of any director, officer or corporate
parent of an Affiliate may serve as a Director and as officers of the Company,
except that no director, officer or employee of the Advisor or its Affiliates
who also is a Director or officer of the Company shall receive any compensation
from the Company for serving as a Director or officer other than reasonable
reimbursement for travel and related expenses incurred in attending meetings of
the Board.

     9.  Fees.
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     (a) Acquisition Fees and Expenses. The Advisor may receive, as compensation
payable by the Company for services rendered in connection with the
investigation, selection and acquisition (by purchase, investment or exchange)
of Properties, Acquisition Fees in an amount equal to up to 3.0% of Gross
Proceeds and Acquisition Expenses in an amount equal to up to 0.5% of Gross
Proceeds. The Acquisition Fees shall be reduced to the extent that, and, if
necessary to limit, the total compensation paid to all persons involved in the
acquisition of any Property to the amount customarily charged in arm's-length
transactions by other persons or entities rendering similar services as an
ongoing public activity in the same geographical location and for comparable
types of Properties and to the extent that other acquisition fees, finder's
fees, real estate commissions, or other similar fees or commissions are paid by
any person in connection with the transaction.

     (b) Subordinated Disposition Fee.  If the Advisor or an Affiliate provides
a substantial amount of the services (as determined by a majority of the
Independent Directors) in connection with the Sale of one or more Properties,
the Advisor or an Affiliate shall receive a Subordinated Disposition Fee equal
to the lesser of (i) one-half of a Competitive Real Estate Commission or (ii)
3.0% of the sales price of such Property or Properties. The Subordinated

                                       11
<PAGE>

Disposition Fee will be paid only if Stockholders have received total Dividends
in an amount equal to the sum of their aggregate Invested Capital and their
aggregate Stockholders' 8.0% Return.  To the extent that Subordinated
Disposition Fees are not paid by the Company on a current basis due to the
foregoing limitation, the unpaid fees will be accrued and paid at such time as
the subordination conditions have been satisfied. The Subordinated Disposition
Fee may be paid in addition to real estate commissions paid to non-Affiliates,
provided that the total real estate commissions paid to all Persons by the
Company shall not exceed an amount equal to the lesser of (i) 6.0% of the
Contract Sales Price of a Property or (ii) the Competitive Real Estate
Commission. In the event this Agreement is terminated prior to such time as the
Stockholders have received total Dividends in an amount equal to 100% of
Invested Capital plus an amount sufficient to pay the Stockholders' 8.0% Return
through the Termination Date, an appraisal of the Properties then owned by the
Company shall be made and the Subordinated Disposition Fee on Properties
previously sold will be deemed earned if the Appraised Value of the Properties
then owned by the Company plus total Dividends received prior to the Termination
Date equals 100% of Invested Capital plus an amount sufficient to pay the
Stockholders' 8.0% Return through the Termination Date. Upon Listing, if the
Advisor has accrued but not been paid such Subordinated Disposition Fee, then
for purposes of determining whether the subordination conditions have been
satisfied, Stockholders will be deemed to have received a Dividends in the
amount equal to the product of the total number of Shares outstanding and the
average closing price of the Shares over a period, beginning 180 days after
Listing, of 30 days during which the Shares are traded.

     (c) Subordinated Share of Net Sales Proceeds.  The Subordinated Share of
Net Sales Proceeds shall be payable to the Advisor in an amount equal to 10% of
Net Sales Proceeds remaining after the Stockholders have received Dividends
equal to the sum of the Stockholders' 8.0% Return and 100% of Invested Capital.
Following Listing, no Subordinated Share of Net Sales Proceeds will be paid to
the Advisor.

     (d) Subordinated Incentive Fee.  Upon Listing, the Advisor shall be
entitled to the Subordinated Incentive Fee in an amount equal to 10.0% of the
amount by which (i) the market value of the outstanding stock of the Company,
measured by taking the average closing price or average of bid and asked price,
as the case may be, over a period of 30 days during which the stock is traded,
with such period beginning 180 days after Listing (the "Market Value"), plus the
total of all Dividends paid to Stockholders from the Company's inception until
the date of Listing, exceeds (ii) the sum of (A) 100% of Invested Capital and
(B) the total Dividends required to be paid to the Stockholders in order to pay
the Stockholders' 8.0% Return from inception through the date of Listing. The
Company shall have the option to pay such fee in the form of cash, Shares, a
promissory note or any combination of the foregoing.  The Subordinated Incentive
Fee will be reduced by the amount of any prior payment to the Advisor of a
deferred, Subordinated Share of Net Sales Proceeds from a Sale or Sales of a
Property.  In the event the Subordinated Incentive Fee is paid to the Advisor
following Listing, no other performance fee will be paid to the Advisor.

     (e) Loans from Affiliates.  If any loans are made to the Company by an
Affiliate of the Advisor, the maximum amount of interest that may be charged by
such Affiliate shall be the lesser of (i) 1.0% above the prime rate of interest
charged from time to time by The Bank of New York and (ii) the rate that would
be charged to the Company by unrelated lending institutions on

                                       12
<PAGE>

comparable loans for the same purpose. The terms of any such loans shall be no
less favorable than the terms available between non-Affiliated Persons for
similar commercial loans.

     (f) Changes to Fee Structure. In the event of Listing, the Company and the
Advisor shall negotiate in good faith to establish a fee structure appropriate
for a perpetual-life entity. A majority of the Independent Directors must
approve the new fee structure negotiated with the Advisor. In negotiating a new
fee structure, the Independent Directors shall consider all of the factors they
deem relevant, including, but not limited to: (i) the amount of the advisory fee
in relation to the asset value, composition and profitability of the Company's
portfolio; (ii) the success of the Advisor in generating opportunities that meet
the investment objectives of the Company; (iii) the rates charged to other REITs
and to investors other than REITs by Advisors performing the same or similar
services; (iv) additional revenues realized by the Advisor and its Affiliates
through their relationship with the Company, including loan administration,
underwriting or broker commissions, servicing, engineering, inspection and other
fees, whether paid by the Company or by others with whom the Company does
business; (v) the quality and extent of service and advice furnished by the
Advisor; (vi) the performance of the investment portfolio of the Company,
including income, conversion or appreciation of capital, and number and
frequency of problem investments; and (vii) the quality of the Property
portfolio of the Company in relationship to the investments generated by the
Advisor for its own account. The new fee structure can be no more favorable to
the Advisor than the current fee structure.

     10.  Expenses.
          --------

     (a) In addition to the compensation paid to the Advisor pursuant to
Paragraph 9 hereof, the Company shall pay directly or reimburse the Advisor for
all of the expenses paid or incurred by the Advisor in connection with the
services it provides to the Company pursuant to this Agreement, including, but
not limited to:

     (i) the Company's Organizational and Offering Expenses; provided, however,
that within 60 days after the end of the month in which an Offering terminates,
the Advisor shall reimburse the Company for any Organizational and Offering
Expenses reimbursement received by the Advisor pursuant to this Paragraph 10, to
the extent that such reimbursement exceeds 3.0% of the Gross Proceeds. The
Advisor shall be responsible for the payment of all the Company's Organizational
and Offering Expenses in excess of 3.0% of the Gross Proceeds;

     (ii) Acquisition Expenses incurred in connection with the selection and
acquisition of Properties at the lesser of the actual cost or 90% of the
competitive rate charged by unaffiliated persons providing similar goods and
services in the same geographic location;

     (iii)  the actual cost of goods and services used by the Company and
obtained from entities not affiliated with the Advisor, other than Acquisition
Expenses, including brokerage fees paid in connection with the purchase and sale
of securities;

     (iv) interest and other costs for borrowed money, including discounts,
points and other similar fees;

                                       13
<PAGE>

     (v) taxes and assessments on income or Property and taxes as an expense of
doing business;

     (vi) costs associated with insurance required in connection with the
business of the Company or by the Board;

     (vii)  expenses of managing and operating Properties owned by the Company,
whether payable to an Affiliate of the Company or a non-affiliated Person.

     (viii)  all expenses in connection with payments to the Board and meetings
of the Board and Stockholders;

     (ix) expenses associated with Listing or with the issuance and distribution
of Shares and Securities, such as selling commissions and fees, advertising
expenses, taxes, legal and accounting fees, Listing and registration fees, and
other Organization and Offering Expenses;

     (x) expenses connected with payments of Dividends in cash or otherwise made
or caused to be made by the Company to the Stockholders;

     (xi) expenses of organizing, revising, amending, converting, modifying, or
terminating the Company or the Articles of Incorporation;

     (xii)  expenses of maintaining communications with Stockholders, including
the cost of preparation, printing, and mailing annual reports and other
Stockholder reports, proxy statements and other reports required by governmental
entities;

     (xiii)  administrative service expenses (including personnel costs;
provided, however, that no reimbursement shall be made for costs of personnel to
the extent that such personnel perform services in transactions for which the
Advisor receives a separate fee); and

     (xiv)  audit, accounting and legal fees.

     (b) Expenses incurred by the Advisor on behalf of the Company and payable
pursuant to this Paragraph 10 shall be reimbursed no less than monthly to the
Advisor. The Advisor shall prepare a statement documenting the expenses of the
Company during each quarter, and shall deliver such statement to the Company
within 45 days after the end of each quarter.

     11.  Other Services.  Should the Board request that the Advisor or any
          --------------
director, officer or employee thereof render services for the Company other than
set forth in Paragraph 3, such services shall be separately compensated at such
rates and in such amounts as are agreed by the Advisor and the Independent
Directors of the Company, subject to the limitations contained in the Articles
of Incorporation, and shall not be deemed to be services pursuant to the terms
of this Agreement.

     12.  Fidelity Bond.  The Advisor shall maintain a fidelity bond for the
          -------------
benefit of the Company which bond shall insure the Company from losses of up to
$200,000 per occurrence and shall be of the type customarily purchased by
entities performing services similar to those provided to the Company by the
Advisor.

                                       14
<PAGE>

     13  Reimbursement to the Advisor.  The Company shall not reimburse the
         ----------------------------
Advisor at the end of any fiscal quarter Operating Expenses that, in the four
consecutive fiscal quarters then ended (the "Expense Year") exceed (the "Excess
Amount") the greater of 2% of Average Invested Assets or 25% of Net Income (the
"2%/25% Guidelines") for such year. Any Excess Amount paid to the Advisor during
a fiscal quarter shall be repaid to the Company. If there is an Excess Amount in
any Expense Year and the Independent Directors determine that such excess was
justified, based on unusual and nonrecurring factors which they deem sufficient,
the Excess Amount may be carried over and included in Operating Expenses in
subsequent Expense Years, and reimbursed to the Advisor in one or more of such
years, provided that Operating Expenses in any Expense Year, including any
Excess Amount to be paid to the Advisor, shall not exceed the 2%/25% Guidelines.
Within 60 days after the end of any fiscal quarter of the Company for which
total Operating Expenses for the Expense Year exceed the 2%/25% Guidelines,
there shall be sent to the stockholders a written disclosure of such fact,
together with an explanation of the factors the Independent Directors considered
in determining that such excess expenses were justified. Such determination
shall be reflected in the minutes of the meetings of the Board of Directors. The
Company will not reimburse the Advisor or its Affiliates for services for which
the Advisor or its Affiliates are entitled to compensation in the form of a
separate fee. All figures used in the foregoing computation shall be determined
in accordance with generally accepted accounting principles applied on a
consistent basis.

     14.  Other Activities of the Advisor.  Nothing herein contained shall
          -------------------------------
prevent the Advisor from engaging in other activities, including, without
limitation, the rendering of advice to other Persons (including other REITs) and
the management of other programs advised, sponsored or organized by the Advisor
or its Affiliates; nor shall this Agreement limit or restrict the right of any
director, officer, employee, or stockholder of the Advisor or its Affiliates to
engage in any other business or to render services of any kind to any other
partnership, corporation, firm, individual, trust or association. The Advisor
may, with respect to any investment in which the Company is a participant, also
render advice and service to each and every other participant therein. The
Advisor shall report to the Board the existence of any condition or
circumstance, existing or anticipated, of which it has knowledge, which creates
or could create a conflict of interest between the Advisor's obligations to the
Company and its obligations to or its interest in any other partnership,
corporation, firm, individual, trust or association. The Advisor or its
Affiliates shall promptly disclose to the Board knowledge of such condition or
circumstance. If the Sponsor, Advisor, Director or Affiliates thereof have
sponsored other investment programs with similar investment objectives which
have investment funds available at the same time as the Company, it shall be the
duty of the Board (including the Independent Directors) to adopt the method set
forth in the Registration Statement or another reasonable method by which
properties are to be allocated to the competing investment entities and to use
their best efforts to apply such method fairly to the Company.

     The Advisor shall be required to use its best efforts to present a
continuing and suitable investment program to the Company which is consistent
with the investment policies and objectives of the Company, but neither the
Advisor nor any Affiliate of the Advisor shall be obligated generally to present
any particular investment opportunity to the Company even if the opportunity is
of character which, if presented to the Company, could be taken by the Company.
The Advisor or its Affiliates may make such an investment in a property only
after (i) such investment has been offered to the Company and all public
partnerships and other investment

                                       15
<PAGE>

entities affiliated with the Company with funds available for such investment
and (ii) such investment is found to be unsuitable for investment by the
Company, such partnerships and investment entities.

     In the event that the Advisor or its Affiliates is presented with a
potential investment which might be made by the Company and by another
investment entity which the Advisor or its Affiliates advises or manages, the
Advisor shall consider the investment portfolio of each entity, cash flow of
each entity, the effect of the acquisition on the diversification of each
entity's portfolio, rental payments during any renewal period, the estimated
income tax effects of the purchase on each entity, the policies of each entity
relating to leverage, the funds of each entity available for investment and the
length of time such funds have been available for investment. In the event that
an investment opportunity becomes available which is suitable for both the
Company and a public or private entity which the Advisor or its Affiliates are
Affiliated, then the entity which has had the longest period of time elapse
since it was offered an investment opportunity will first be offered the
investment opportunity. The Advisor may consider the property for private
placement only if such property is deemed inappropriate for any investment
entity which is advised or managed by the Advisor, including the Company.

     15.  Relationship of Advisor and Company.  The Company and the Advisor are
          -----------------------------------
not partners or joint venturers with each other, and nothing in this Agreement
shall be construed to make them such partners or joint venturers or impose any
liability as such on either of them.

     16.  Term; Termination of Agreement.  This Agreement shall continue in
          ------------------------------
force until January 29, 2002, subject to an unlimited number of successive one-
year renewals upon mutual consent of the parties. It is the duty of the Board to
evaluate the performance of the Advisor or annually before renewing the
Agreement, and each such renewal shall be for a term of no more than one year.

     17.  Termination by Either Party.  This Agreement may be terminated upon 60
          ---------------------------
days written notice without Cause or penalty, by either party (by a majority of
the Independent Directors of the Company or a majority of the Board of Directors
of the Advisor, as the case may be).

     18.  Assignment to an Affiliate.  This Agreement may be assigned by the
          --------------------------
Advisor to an Affiliate with the approval of a majority of the Board (including
a majority of the Independent Directors). The Advisor may assign any rights to
receive fees or other payments under this Agreement without obtaining the
approval of the Board.  This Agreement shall not be assigned by the Company
without the consent of the Advisor, except in the case of an assignment by the
Company to a corporation or other organization which is a successor to all of
the assets, rights and obligations of the Company, in which case such successor
organization shall be bound hereunder and by the terms of said assignment in the
same manner as the Company is bound by this Agreement.

     19.  Payments to and Duties of Advisor upon Termination.  Payments to the
          --------------------------------------------------
Advisor pursuant to this Section 19 shall be subject to the 2%/25% Guidelines to
the extent applicable.

                                       16
<PAGE>

     (a) After the Termination Date, the Advisor shall not be entitled to
compensation for further services hereunder except it shall be entitled to
receive from the Company within 30 days after the effective date of such
termination all unpaid reimbursements of expenses and all earned but unpaid fees
payable to the Advisor prior to termination of this Agreement.

     (b) The Advisor shall promptly upon termination:

     (i) pay over to the Company all money collected and held for the account of
the Company pursuant to this Agreement, after deducting any accrued compensation
and reimbursement for its expenses to which it is then entitled;

     (ii) deliver to the Board a full accounting, including a statement showing
all payments collected by it and a statement of all money held by it, covering
the period following the date of the last accounting furnished to the Board;

     (iii)  deliver to the Board all assets, including Properties, and documents
of the Company then in the custody of the Advisor; and

     (iv) cooperate with the Company to provide an orderly management
transition.

     20.  Indemnification by the Company.  The Company shall indemnify and hold
          ------------------------------
harmless the Advisor and its Affiliates, including their respective officers,
directors, partners and employees, from all liability, claims, damages or losses
arising in the performance of their duties hereunder, and related expenses,
including reasonable attorneys' fees, to the extent such liability, claims,
damages or losses and related expenses are not fully reimbursed by insurance,
subject to any limitations imposed by the laws of the State of Maryland or the
Articles of Incorporation of the Company. Notwithstanding the foregoing, the
Advisor shall not be entitled to indemnification or be held harmless pursuant to
this paragraph 20 for any activity which the Advisor shall be required to
indemnify or hold harmless the Company pursuant to paragraph 21. Any
indemnification of the Advisor may be made only out of the net assets of the
Company and not from Stockholders.

     21.  Indemnification by Advisor.  The Advisor shall indemnify and hold
          --------------------------
harmless the Company from contract or other liability, claims, damages, taxes or
losses and related expenses including attorneys' fees, to the extent that such
liability, claims, damages, taxes or losses and related expenses are not fully
reimbursed by insurance and are incurred by reason of the Advisor's bad faith,
fraud, willful misfeasance, misconduct, negligence or reckless disregard of its
duties, but the Advisor shall not be held responsible for any action of the
Board of Directors in following or declining to follow any advice or
recommendation given by the Advisor.

     22.  Notices.  Any notice, report or other communication required or
          -------
permitted to be given hereunder shall be in writing unless some other method of
giving such notice, report or other communication is required by the Articles of
Incorporation, the Bylaws, or accepted by the party to whom it is given, and
shall be given by being delivered by hand or by overnight mail or other
overnight delivery service to the addresses set forth herein:

                                       17
<PAGE>

To the Board and to the Company:      Wells Real Estate Investment
                                      Trust, Inc.
                                      6200 The Corners Parkway, Suite 250
                                      Norcross, Georgia  30092

To the Advisor:                       Wells Capital, Inc.
                                      6200 The Corners Parkway, Suite 250
                                      Norcross, Georgia  30092

     Either party may at any time give notice in writing to the other party of a
change in its address for the purposes of this Paragraph 22.

     23.  Modification.  This Agreement shall not be changed, modified,
          ------------
terminated, or discharged, in whole or in part, except by an instrument in
writing signed by both parties hereto, or their respective successors or
assignees.

     24.  Severability.  The provisions of this Agreement are independent of and
          ------------
severable from each other, and no provision shall be affected or rendered
invalid or unenforceable by virtue of the fact that for any reason any other or
others of them may be invalid or unenforceable in whole or in part.

     25.  Construction.  The provisions of this Agreement shall be construed and
          ------------
interpreted in accordance with the laws of the State of Georgia.

     26.  Entire Agreement.  This Agreement contains the entire agreement and
          ----------------
understanding among the parties hereto with respect to the subject matter
hereof, and supersedes all prior and contemporaneous agreements, understandings,
inducements and conditions, express or implied, oral or written, of any nature
whatsoever with respect to the subject matter hereof. The express terms hereof
control and supersede any course of performance and/or usage of the trade
inconsistent with any of the terms hereof. This Agreement may not be modified or
amended other than by an agreement in writing.

     27.  Indulgences, not Waivers.  Neither the failure nor any delay on the
          ------------------------
part of a party to exercise any right, remedy, power or privilege under this
Agreement shall operate as a waiver thereof, nor shall any single or partial
exercise of any right, remedy, power or privilege preclude any other or further
exercise of the same or of any other right, remedy, power or privilege, nor
shall any waiver of any right, remedy, power or privilege with respect to any
occurrence be construed as a waiver of such right, remedy, power or privilege
with respect to any other occurrence. No waiver shall be effective unless it is
in writing and is signed by the party asserted to have granted such waiver.

     28.  Gender.  Words used herein regardless of the number and gender
          ------
specifically used, shall be deemed and construed to include any other number,
singular or plural, and any other gender, masculine, feminine or neuter, as the
context requires.

                                       18
<PAGE>

     29.  Titles not to Affect Interpretation.  The titles of paragraphs and
          -----------------------------------
subparagraphs contained in this Agreement are for convenience only, and they
neither form a part of this Agreement nor are they to be used in the
construction or interpretation hereof.

     30.  Execution in Counterparts.  This Agreement may be executed in any
          -------------------------
number of counterparts, each of which shall be deemed to be an original as
against any party whose signature appears thereon, and all of which shall
together constitute one and the same instrument. This Agreement shall become
binding when one or more counterparts hereof, individually or taken together,
shall bear the signatures of all of the parties reflected hereon as the
signatories.

     31.  Name.  Wells Capital, Inc. has a proprietary interest in the name
          ----
"Wells." Accordingly, and in recognition of this right, if at any time the
Company ceases to retain Wells Capital, Inc. or an Affiliate thereof to perform
the services of Advisor, the Company will, promptly after receipt of written
request from Wells Capital, Inc., cease to conduct business under or use the
name "Wells" or any diminutive thereof and the Company shall use its best
efforts to change the name of the Company to a name that does not contain the
name "Wells" or any other word or words that might, in the sole discretion of
the Advisor, be susceptible of indication of some form of relationship between
the Company and the Advisor or any Affiliate thereof. Consistent with the
foregoing, it is specifically recognized that the Advisor or one or more of its
Affiliates has in the past and may in the future organize, sponsor or otherwise
permit to exist other investment vehicles (including vehicles for investment in
real estate) and financial and service organizations having "Wells" as a part of
their name, all without the need for any consent (and without the right to
object thereto) by the Company or its Board.

     32.  Initial Investment.  The Advisor has contributed $200,000 (the
          ------------------
"Initial Investment") in exchange for 20,000 units of limited partnership
interest ("Units") in Wells Operating Partnership, L.P. (the "Partnership").
The Advisor or its Affiliates may not sell any of the Units purchased with the
Initial Investment while the Advisor acts in such advisory capacity to the
Company, provided, that such Units may be transferred in connection with the
         --------  ----
exercise of the Advisor's right under the Partnership Agreement of the
Partnership to exchange its Units for Shares, in which case similar restrictions
on transfer will apply to the Shares received by the Advisor.  The restrictions
included above shall not apply to any Shares acquired by the Advisor or its
Affiliates other than the Units acquired through the Initial Investment or
Shares acquired in exchange for the Units acquired through the Initial
Investment.  The Advisor shall not vote any Shares it now owns, or hereafter
acquires, in any vote for the election of Directors or any vote regarding the
approval or termination of any contract with the Advisor or any of its
Affiliates.

                                       19
<PAGE>

     IN WITNESS WHEREOF, the parties hereto have executed this Advisory
Agreement as of the date and year first above written.

                                  WELLS REAL ESTATE INVESTMENT TRUST, INC.

                                  By:  /s/ Leo F. Wells, III
                                     ------------------------------------
                                  Name:  Leo F. Wells, III
                                       ----------------------------------
                                  Title:  President
                                        ---------------------------------

                                  WELLS CAPITAL, INC.

                                  By:  /s/ Douglas P. Williams
                                     ------------------------------------
                                  Name: Douglas P. Williams
                                       ----------------------------------
                                  Title:  Senior Vice President
                                        ---------------------------------

                                       20<PAGE>

                                                                   EXHIBIT 10.66

                  AGREEMENT FOR PURCHASE AND SALE OF PROPERTY

                       FOR THE STONE & WEBSTER BUILDING
<PAGE>

                AGREEMENT FOR THE PURCHASE AND SALE OF PROPERTY
                     1430 Enclave Parkway, Houston, Texas
                     ------------------------------------

     THIS AGREEMENT FOR THE PURCHASE AND SALE OF PROPERTY (the "Agreement"), is
made and entered into as of the 28 day of November, 2000, by and between
CARDINAL PARAGON, INC., a Texas corporation ("Seller"), and WELLS OPERATING
PARTNERSHIP, L.P., a Delaware limited partnership ("Purchaser").

                             W I T N E S S E T H:
                             - - - - - - - - - -

     WHEREAS, Cardinal Capital Partners, Inc., a Texas corporation ("Cardinal
Capital"), and Stone & Webster, Inc., a Louisiana corporation ("Stone"), have
executed an Agreement for Sale dated as of November 7, 2000 (the "Stone
Contract"), pursuant to which Cardinal Capital has the right to acquire the
Property (as defined herein); and

     WHEREAS, Cardinal Capital has assigned its rights under the Stone Contract
to Seller pursuant to an Assignment of Contract dated November 8, 2000; and

     WHEREAS, Seller desires to sell and Purchaser desires to purchase the
Property subject to the terms and conditions hereinafter set forth.

     NOW, THEREFORE, for and in consideration of the premises, the mutual
agreements contained herein, the sum of Ten Dollars ($10.00) in hand paid by
Purchaser to Seller at and before the sealing and delivery of these presents and
for other good and valuable consideration, the receipt, adequacy, and
sufficiency which are hereby expressly acknowledged by the parties hereto, the
parties hereto do hereby covenant and agree as follows:

     1.   Purchase and Sale of Property. Subject to and in accordance with
          -----------------------------
the terms and provisions of this Agreement, Seller hereby agrees to sell to
Purchaser and Purchaser hereby agrees to purchase from Seller, the Property,
which term "Property" shall mean and include the following:

          (a)  all that tract or parcel of land (the "Land") located in Houston,
     Harris County, Texas, being more particularly described on Exhibit "A"
                                                                -----------
     hereto; and

          (b)  all rights, privileges, and easements appurtenant to the Land,
     including any water rights, mineral rights, reversions, or other
     appurtenances to said Land, if any, and all right, title, and interest of
     Seller, if any, in and to any land lying in the bed of any street, road,
     alley, or right-of-way, open or proposed, adjacent to or abutting the Land;
     and

          (c)  all buildings, structures, and improvements situated on the Land,
     and other amenities located on the Land, and all apparatus, built-in
     appliances, equipment, pumps, machinery, plumbing, heating, air
     conditioning, electrical and other fixtures located on the Land and not
     owned by tenants of the building (all of which, but exclusive of property
<PAGE>

     owned by tenants of the building, are herein collectively referred to as
     the "Improvements"); and

          (d)  all personal property, if any, acquired by Seller from Stone and
     located on or to be located on or in, or used in connection with, the Land
     and Improvements ("Personal Property"); and

          (e)  all of Seller's right, title, and interest, as landlord or
     lessor, in and to the Leases (as hereinafter defined); and

          (f)  all of Seller's right, title, and interest in and to any
     intangible property acquired by Seller from Stone relating to and
     reasonably required for the ownership and operation of the Property (but
     excluding any trade names or trade marks, any intangible property which
     relates to the operation of the business conducted by Stone), including,
     without limitation, building plans and specifications with respect to the
     Improvements, licenses and entitlements (e.g. certificates of occupancy),
     soil reports, surveys, warranties, guarantees, utility contracts, permits
     and any other rights acquired by Seller from Stone related to the ownership
     of or use and operation of the Land, Personal Property, or Improvements, if
     any (but not including the names "The Shaw Group, Inc.", "Stone & Webster,
     Inc." or any derivations thereof or logos therefor), all if and only to the
     extent acquired by Seller from Stone (herein, the "Intangible Property").

     2.   The Title Company and the Escrow Agent.  Alamo Title Company, located
          --------------------------------------
at 5251 Westheimer, Suite 200, Houston, Texas 77056 and Republic Title of Texas,
Inc., located at 2626 Howell, 10/th/ Floor, Dallas, Texas 75204, are referred to
herein as the "Title Company." Republic Title of Texas, Inc., located at 2626
Howell, 10th Floor, Dallas, Texas 75204, is referred to herein as the "Escrow
Agent".

     3.   Purchase Price and Earnest Money. (a) The purchase price (the
          --------------------------------
"Purchase Price") to be paid by Purchaser to Seller for the Property shall be
Forty-Four Million, Nine Hundred Seventy Thousand and No/100 Dollars
($44,970,000.00). The Purchase Price, less the Seller's Loan (as hereinafter
defined), shall be paid by Purchaser by wire transfer of immediately available
funds to the Escrow Agent for immediate disbursement at Closing (as hereinafter
defined), subject to adjustment and credits as otherwise specified in this
Agreement.

     (b)  Upon execution of this Agreement, Purchaser shall deliver to the
Escrow Agent One Million and No/100 Dollars ($1,000,000.00) (in immediately
available funds) as earnest money (the "Earnest Money"), which funds shall be
                                        -------------
deposited and held by the Escrow Agent in an interest bearing account. In the
event the transaction contemplated by this Agreement is closed, the Earnest
Money will be applied in payment of the Purchase Price to be paid at Closing. In
the event the transaction is not closed, the Earnest Money shall be disbursed in
accordance with the provisions of this Agreement.
<PAGE>

     (c)  Prior to the expiration of the Feasability Period (as hereinafter
defined), Purchaser shall deliver to the Escrow Agent an additional Five Hundred
Thousand and No/100 Dollars ($500,000.00) (in immediately available funds) as
additional Earnest Money, which funds shall be deposited and held by the Escrow
Agent with the previously delivered Earnest Money in an interest bearing
account. In the event the transaction contemplated by this Agreement is closed,
the Earnest Money will be applied in payment of the Purchase Price to be paid at
Closing. In the event the transaction is not closed, the Earnest Money shall be
disbursed in accordance with the provisions of this Agreement.

     4.   Purchaser's Inspection and Review Rights. (a) During the Feasability
          ----------------------------------------
Period, Purchaser and its agents, engineers, or representatives shall have the
privilege, by coordinating their activities with Seller, of going upon the
Property as needed to inspect, examine, test, and survey the Property. After the
Feasability Period, and upon the request of Purchaser, Seller shall use its
reasonable efforts to allow Purchaser access to the Property. Purchaser hereby
agrees to indemnify and hold Seller and Stone harmless from any liens, claims,
liabilities, and damages incurred through the exercise of such privilege; and
Purchaser, under the direction of Seller, further agrees to repair any damage to
the Property caused by the exercise of such privilege. Such obligations shall
survive any termination of this Agreement. Seller has made available to
Purchaser, or Purchaser's agents and representatives, for review and copying,
all books, records, files and other information in Seller's possession relating
to the ownership and operation of the Property, including, without limitation,
any tenant files, and other contracts, books, records, operating statements, and
other information relating to the Property obtained from Stone or independently
developed by Seller. Seller has provided to Purchaser prior to the date hereof
any appraisals, building inspection reports, environmental reports and financial
information relating thereto which is in the possession or under the control of
Seller.

     (b)  The Feasability Period shall commence on the date hereof and end
at 6:00 p.m., Dallas, Texas time, December 14, 2000, TIME BEING OF THE ESSENCE.
                                                     -------------------------
If Purchaser determines, in its sole judgment, that the Property is not suitable
for any reason for Purchaser's intended use or purpose, or is not in
satisfactory condition, then Purchaser may terminate this Agreement by written
notice to Seller prior to the expiration of the Feasability Period, in which
case the Earnest Money will be returned to Purchaser, and neither party shall
have any further right or obligation hereunder other than as set forth herein
with respect to rights or obligations which survive termination. If the
Agreement is not terminated in the manner and within the time provided in this
Subsection 4(b), TIME BEING OF THE ESSENCE, the option for Purchaser to
                 -------------------------
terminate this Agreement pursuant to the terms of this Subsection 4(b) shall be
deemed to have been waived by Purchaser.

          (c)  Notwithstanding anything herein to the contrary, in the event
that Purchaser gives Seller notice prior to the expiration of the Feasability
Period that Purchaser desires to terminate this Contract due to an
unsatisfactory condition of the slab of concrete on the Land (the "Slab") and
Purchaser simultaneously therewith certifies to Seller the nature of such
unsatisfactory condition of the Slab (the "Unsatisfactory Condition"), Seller
shall have until 6:00 p.m., Central Time, on January 15, 2001 (the "Cure
Period"), in which to cure the Unsatisfactory Condition. In
<PAGE>

the event that Seller cures the Unsatisfactory Condition prior to the expiration
of the Cure Period, notwithstanding anything herein to the contrary, the Closing
Date shall be deemed to be the date that is two weeks subsequent to the date
that Purchaser receives notice that the Unsatisfactory Condition has been cured.
In the event that Seller fails to cure the Unsatisfactory Condition prior to the
expiration of the Cure Period, this Contract shall be deemed terminated as of
the expiration of the Cure Period. Nothing herein shall obligate Seller to cure
the Unsatisfactory Condition.

     5.   Special Condition Precedent to Seller's Obligations. (a) Purchaser
          ---------------------------------------------------
specifically acknowledges that Seller has contracted with Stone to acquire the
Property from Stone and enter into the Stone Lease (hereinafter defined). In the
event that Seller is unable to acquire the Property for any reason other than
Seller's willful default under the Stone Contract, Purchaser's sole right shall
be to terminate this Agreement whereupon Purchaser and Seller shall thereafter
be excused from all obligations of one to the other, except those obligations
which expressly survive any termination of this Agreement. The date of Closing
hereunder shall occur simultaneously with closing under the Stone Contract,
which is scheduled for twenty-two (22) days after the expiration of the
Feasability Period (the "Closing Date"), for which TIME SHALL BE OF THE ESSENCE
                                                   ----------------------------
with respect to Purchaser's obligations hereunder, and Seller and Purchaser
agree to cooperate with each other to close on such date. If Closing hereunder
does not occur simultaneously with closing under the Stone Contract, then
Purchaser shall pay for the premium for the owner's policy of title insurance.

     (b)  In lieu of transferring the Property to Purchaser as provided in this
Agreement, Seller shall be entitled to direct Stone to convey title directly to
Purchaser (provided the Deed satisfies the provisions of Section 11(a)) and to
enter into the Stone Lease directly with Purchaser. If Seller elects to direct
Stone to convey title directly to Purchaser, Seller shall provide Purchaser
notice of such election at lest three (3) days prior to the Closing Date. In
such event, (i) Purchaser and Stone shall directly enter into the Stone Lease,
as provided herein, (ii) there shall be no prorations between Purchaser and
Seller under Section 14 hereof, but Seller shall cause Stone to prorate with
Purchaser all ad valorem real estate taxes and assessments levied or assessed
against the Property according to the calendar year as of the Closing Date,
based on the most recent tax bill for the Property, and such other items as are
normally and customarily proratable and are proratated by Stone, (iii) Seller
shall not be obligated to deliver the documents referred to in Section 11
(except that Seller will cause the documents set forth in Sections 11 to be
delivered to Purchaser at the Closing), and (iv) Purchaser shall not be
obligated to deliver the documents referred to in Sections 12 to Seller and
shall instead be obligated to deliver such documents to Stone.

     6.   General Conditions Precedent to Purchaser's Obligations Regarding
          -----------------------------------------------------------------
the Closing. In addition to the conditions to Purchaser's obligations set forth
-----------
in Paragraph 5 above, the obligations and liabilities of Purchaser hereunder
shall in all respects be conditioned upon the satisfaction of each of the
following conditions, any of which may be waived by written notice from
Purchaser to Seller:
<PAGE>

          (a)  Compliance by Seller. Seller shall have complied in all material
               --------------------
     respects with and otherwise performed in all material respects each of the
     covenants and obligations of Seller set forth in this Agreement as of the
     date of Closing.

          (b)  Seller's  Representations.  All representations and warranties of
               -------------------------
     Seller as set forth in this Agreement shall be true and correct in all
     material respects as of the date of Closing.

          (c)  No Adverse Changes. There shall have been no adverse change to
               ------------------
     the title to the Property which has not been cured, and the Title Company
     shall have issued the Title Commitment (as hereinafter defined) on the Land
     and Improvements without exceptions other than as described in paragraph 7
     and the Title Company shall be prepared to issue to Purchaser upon the
     Closing an owner's title insurance policy on the Land and Improvements
     pursuant to such Title Commitment.

          (d)  Tenant Estoppels. Purchaser shall have received a tenant estoppel
               ----------------
     certificate duly executed by Sysco Corp. ("Sysco") at or prior to Closing
     in a form approved by Purchaser prior to the expiration of the Feasability
     Period, and, if Purchaser is not a named party to the Stone Lease, a tenant
     estoppel from Stone in the form of estoppel provided by Sysco.

          (e)  Leases. Attached hereto as Exhibit "B-1" is a true and accurate
               ------                     ------------
     copy of that certain lease dated July 20, 1998, between Enclave Parkway
     Realty, Inc. and Sysco (said lease is referred to herein as the "Sysco
     Lease"). Attached hereto as Exhibit "B-2" is a true and accurate copy of a
                                 ------------
     Lease (the "Stone Lease") to be entered into by and between Seller and
     Stone at the Closing. The Sysco Lease and the Stone Lease are hereinafter
     collectively defined as the "Leases." Sysco and Stone are hereinafter
     collectively known as "Tenants". As of the Closing, the Leases shall be in
     full force and effect; and, subject to the provisions of Section 5 hereof,
     Seller shall be the "landlord" under the Leases, and Seller shall own
     unencumbered legal and beneficial title thereto and the rents and other
     income thereunder. The Stone Lease shall be guaranteed by The Shaw Group,
     Inc., a Texas corporation ("Shaw") pursuant to a Guaranty of Lease attached
     hereto and made a part hereof as Exhibit B-3
                                      -----------

          (f)  Lease - Rents and Special Consideration. The Tenants shall: (i)
               ---------------------------------------
     not have prepaid rent for more than the current month under the Leases,
     (ii) not have received and shall not be entitled to receive any rent
     concession in connection with its tenancy under the Leases other than as
     described in the Leases, (iii) not be entitled to any special work (not yet
     performed), or consideration (not yet given) in connection with its tenancy
     under the Leases, and (iv) not have any deed, option, or other evidence of
     any right or interest in or to the Property, except for the Tenants'
     tenancy as evidenced by the express terms of the Leases.

          (g)  Lease - Acceptance of Premises. (i) the Tenants shall have
               ------------------------------
     accepted their leased premises located within the Property, including any
     and all work performed therein
<PAGE>

     or thereon pursuant to the Leases, (ii) the Tenants shall be in full and
     complete possession of their respective premises under the Leases, and
     (iii) neither Seller nor Stone shall have received notice from a Tenant
     that such Tenant's premises are not in full compliance with the terms and
     provisions of the Tenant's Lease or are not satisfactory for the Tenant's
     purposes.

          (h)  No Other Agreements. Other than the Leases, the Permitted
               -------------------
     Exceptions (as hereinafter defined), and such other service, utility,
     maintenance and other contracts or agreements, and union or other
     collective bargaining contracts currently in effect with respect to the
     Property (collectively, the "Service Contracts") of which Purchaser may
     receive copies within seven (7) days of the date hereof, there shall be no
     leases, service contracts, management agreements, or other agreements or
     instruments in force and effect, oral or written, to which Seller is a
     party and that grant to any person whomsoever or any entity whatsoever any
     right, title, interest or benefit in or to all or any part of the Property
     or any rights relating to the use, operation, management, maintenance, or
     repair of all or any part of the Property.

          (i)  No Litigation. Except for a dispute relating to the purported
               -------------
     termination of the tax abatement agreements with Harris County, Houston
     Independent School District and other tax authorities affecting the
     Property (the "Tax Dispute"), there shall be no actions, suits, or
     proceedings pending, or, to Seller's actual knowledge but without any duty
     of investigation whatsoever on the part of Seller other than
     representations made by Stone to Seller in the Stone Contract
     (collectively, "Seller's Knowledge"), threatened by any organization,
     person, individual, or governmental agency against Seller with respect to
     the Property; and, to Seller's Knowledge, there shall be no actions, suits
     or proceedings at law or in equity by or before any Governmental Authority
     (as hereinafter defined) or other agency now pending and served or, to
     Seller's Knowledge, threatened against Stone and affecting the Property.

          (j)  Condemnation. There shall be no pending or, to Seller's
               ------------
     Knowledge, threatened condemnation or eminent domain proceedings (or
     proceedings in the nature or in lieu thereof) affecting the Property or any
     portion thereof or its use.

          (k)  Proceedings Affecting Access. There shall be no pending or
               ----------------------------
     threatened condemnation proceedings that could have the effect of impairing
     or restricting access between the Property and adjacent public roads.

          (l)  SNDA's. Purchaser shall have received a Subordination,
               ------
     Non-Disturbance and Attornment Agreement in a form reasonably acceptable to
     the Bank (as hereinafter defined) with respect to the Leases.

     7.   Title and Survey. Seller shall cause the Title Company, at
          ----------------
Seller's cost and expense, to deliver to Purchaser, within seven (7) days of the
date hereof, its commitment (herein referred to as the "Title Commitment") to
issue to Purchaser, upon the recording of the Deed conveying title
<PAGE>

to the Land and Improvements from Seller to Purchaser, the payment of the
Purchase Price (whether by Seller or Purchaser, as provided hereunder), and the
payment to the Title Company of the policy premium therefor, an owner's policy
of title insurance, in the amount of the Purchase Price, insuring record title
to the Land and Improvements to be in Purchaser subject only to the Permitted
Exceptions (as hereinafter defined) and containing the standard printed
exceptions, provided, however, there shall be no exception for mechanics' or
materialmen's liens, the exception for taxes shall refer to the year 2000, and
any exception for parties in possession shall be limited to rights of Tenants,
as tenants only, pursuant to the Leases. The survey exception may be amended to
except only the "shortages in area." Seller shall also cause to be delivered to
Purchaser, together with such Title Commitment, legible copies of all documents
and instruments referred to therein and a current "as-built" survey of the Land
and Improvements. Purchaser will, by the expiration of the Feasability Period,
have examined the Title Commitment, the exception documents and the survey. The
matters set forth on such survey and in the Title Commitment shall be referred
to herein as the "Permitted Exceptions."

     8.   Representations and Warranties of Seller.  Seller hereby makes the
          ----------------------------------------
following representations and warranties to Purchaser, each of which shall be
deemed material:

          (a)  Lease - Assignment. To Seller's Knowledge, no Tenant has assigned
               ------------------
     its interest in a Lease or sublet any portion of the premises leased to
     each such Tenant under a Lease.

          (b)  Lease - Default. (i) Seller has not received any notice of
               ---------------
     termination or default under any Lease and does not know of Stone receiving
     the same, (ii) Seller knows of no existing or uncured defaults by a Tenant
     under the Leases, (iii) to Seller's Knowledge, no Tenant has asserted any
     defense, set-off, or counterclaim with respect to its tenancy or its
     obligation to pay rent, additional rent, or other charges pursuant to the
     Leases.

          (c)  Lease - Commissions. No rental, lease, or other commissions with
               -------------------
     respect to the Leases are payable to Seller, any partner of Seller, any
     party affiliated with or related to Seller or any partner of Seller or, to
     Seller's Knowledge, any third party. Any commissions payable under,
     relating to, or as a result of the Leases shall have been paid and
     satisfied in full as of the Closing.

          (d)  No Assessments. Except for the Tax Dispute, to Seller's
               --------------
     Knowledge, no assessments have been made against the Property that are
     unpaid, whether or not they have become liens.

          (e)  Conditions of Improvements. To Seller's Knowledge, there is no
               --------------------------
     structural or other defects in the Improvements.

          (f)  Violations. Except for the Tax Dispute, to Seller's Knowledge,
               ----------
     there is no violation of law, municipal or county ordinances, or other
     legal requirements with respect to the Property.
<PAGE>

          (g)  Bankruptcy. Seller is "solvent" as said term is defined by
               ----------
     bankruptcy law and has not made a general assignment for the benefit of
     creditors nor been adjudicated a bankrupt or insolvent, nor has a receiver,
     liquidator, or trustee for any of Seller's properties (including the
     Property) been appointed or a petition filed by or against Seller for
     bankruptcy, reorganization, or arrangement pursuant to the Federal
     Bankruptcy Act or any similar Federal or state statute, or any proceeding
     instituted for the dissolution or liquidation of Seller.

          (h)  Pre-existing Right to Acquire. Seller has granted no person or
               -----------------------------
     entity any right or option to acquire the Property or any portion thereof
     which will have any force or effect after the execution of this Agreement,
     other than Purchaser.

          (i)  Authorization. Seller is a duly organized and validly existing
               -------------
     corporation under the laws of the State of Texas. This Agreement has been
     duly authorized and executed on behalf of Seller and constitutes the valid
     and binding agreement of Seller, enforceable in accordance with its terms,
     and all necessary action on the part of Seller to authorize the
     transactions herein contemplated has been taken, and no further action is
     necessary for such purpose.

          (j)  Seller Not a Foreign Person. Seller is not a "foreign person"
               ---------------------------
     which would subject Purchaser to the withholding tax provisions of Section
     1445 of the Internal Revenue Code of 1986, as amended.

     AS A CONDITION PRECEDENT TO SELLER'S UNDERTAKINGS AND AGREEMENTS HEREUNDER,
SELLER EXPRESSLY DISCLAIMS AND PURCHASER ACKNOWLEDGES AND ACCEPTS THAT SELLER
HAS DISCLAIMED MAKING ANY REPRESENTATIONS, WARRANTIES, OR ASSURANCES WITH
RESPECT TO THE PROPERTY OTHER THAN AS SPECIFICALLY SET OUT HEREIN. OTHER THAN AS
SPECIFICALLY SET OUT HEREIN, PURCHASER AGREES THAT WITH RESPECT TO THE PROPERTY
IT WILL RELY UPON ITS INSPECTIONS THEREOF OR ITS DETERMINATIONS NOT TO INSPECT
THE SAME, AND UPON CLOSING SHALL ACCEPT THE PROPERTY IN ITS "AS IS" CONDITION,
WITH ALL FAULTS, AND WITHOUT REFERENCE TO MERCHANTABILITY OR FITNESS FOR ANY
SPECIFIC PURPOSE.

     9.   Seller's  Additional  Covenants.  Seller does hereby further covenant
          -------------------------------
and agree as follows, if and to the extent that the Closing shall occur after
the execution hereof:

          (a)  Operation of Property. Seller hereby covenants that, from the
               ---------------------
     date of Seller's acquisition of the Property up to and including the date
     of Closing or earlier termination of this Agreement, Seller shall: (i) not
     modify, amend, or terminate any Lease or enter into any new lease,
     contract, or other agreement respecting the Property, (ii) not grant or
     otherwise create or consent to the creation of any easement, restriction,
     lien, assessment, or encumbrance respecting the Property, and (iii) cause
     the Property to be operated,
<PAGE>

     maintained, and repaired in the same manner as the Property is currently
     being operated, maintained, and repaired.

          (b)  Preservation of Lease. Seller shall, from and after the date of
               ---------------------
     Seller's acquisition of the Property to the date of Closing, use its good
     faith efforts to perform and discharge all of the duties and obligations
     and shall otherwise comply with every covenant and agreement of the
     landlord under the Lease, at Seller's expense, in the manner and within the
     time limits required thereunder. Furthermore, Seller shall, for the same
     period of time, use diligent and good faith efforts to cause the Tenants
     under the Leases to perform all of their duties and obligations and
     otherwise comply with each and every one of its covenants and agreements
     under such Leases and shall take such actions as are reasonably necessary
     to enforce the terms and provisions of the Leases.

     10.  Closing. Provided that all of the conditions set forth in this
          -------
Agreement are theretofore fully satisfied or performed, it being fully
understood and agreed, however, that Purchaser may expressly waive in writing,
at or prior to Closing, any conditions that are unsatisfied or unperformed at
such time, the consummation of the sale by Seller and purchase by Purchaser of
the Property (herein referred to as the "Closing") shall be held at 2:00 p.m.,
local time, on or before the date that is twenty-two (22) days after the
expiration of the Feasability Period.

     11.  Seller's Closing Documents. For and in consideration of, and as a
          --------------------------
condition precedent to, Purchaser's delivery to Seller of the Purchase Price
described in Paragraph 3 hereof, Seller shall obtain or execute, at Seller's
expense, and deliver to Purchaser at Closing the following documents (all of
which shall be duly executed, acknowledged, and notarized where required and
shall survive the Closing):

          (a)  Special Warranty Deed. A Special Warranty Deed conveying to
               ---------------------
     Purchaser title to the Land and Improvements, together with all rights,
     easements, and appurtenances thereto, if any, subject only to the Permitted
     Exceptions. The legal description set forth in the Special Warranty Deed
     shall be as set forth on Exhibit "A;"
                              ------------

          (b)  Bill of Sale. A Bill of Sale conveying to Purchaser title to the
               ------------
     Personal Property in a form approved by Purchaser prior to the expiration
     of the Feasability Period, which form shall be in substantially the same
     form and substance as the bill of sale to Seller from Stone;

          (c)  Assignment of Intangible Property. An Assignment of Intangible
               ---------------------------------
     Property, including all construction warranties and guarantees that Seller
     receives from Stone, such Assignment of Intangible Property to be in
     substantially the same the form and substance as the assignment of
     intangible property to Seller from Stone and as set forth in Exhibit C;
                                                                  ---------

          (d)  Assignment and Assumption of Leases. An Assignment and Assumption
               -----------------------------------
     of Leases in a form approved by Purchaser prior to the expiration of the
     Feasability Period, which form shall be in substantially the same form and
     substance as the assignment and
<PAGE>

         assumption of leases between Seller and Stone, assigning to Purchaser
         all of Seller's right, title, and interest in and to the Leases and the
         rents thereunder;

               (e) Memorandum of Lease. The Memorandum of Lease for the portion
                   -------------------
         of the Property to be leased to Stone at the Closing, in the form of
         Exhibit D duly executed and acknowledged by Stone in recordable form.
         ---------

               (f) Assignment of Service Contracts. An Assignment of any
                   -------------------------------
         assignable Service Contracts in a form approved by Purchaser prior to
         the expiration of the Feasability Period, which form shall be in
         substantially the same form and substance as the assignment from Stone
         to Seller.

               (g) FIRPTA Certificate. A FIRPTA Certificate in such form as
                   ------------------
         required by the Internal Revenue Service;

               (h) Certificates of Occupancy. Any original certificates of
                   -------------------------
         occupancy that Seller receives from Stone;

               (i) Keys, Records, Etc. Any keys to doors or locks on the
                   ------------------
         Property, any original tenant files, books and records relating to the
         Property and any other item which Seller receives from Stone;

               (j) Tenant Notice. Notice from Seller to the Tenants of the sale
                   -------------
         of the Property to Purchaser in such form as Purchaser shall reasonably
         approve;

               (k) Settlement Statement. A settlement statement setting forth
                   --------------------
         the amounts paid by or on behalf of and/or credited to each of
         Purchaser and Seller pursuant to this Agreement; and

               (l) Evidence of Issuance of Title Commitment. Purchaser shall
                   ----------------------------------------
         receive reasonable assurance that the Title Company will issue an
         owner's title policy in the form required hereby, with an effective
         date as of the date and time of recording the Special Warranty Deed,
         reflecting that Purchaser is vested with title to the Land and
         Improvements, and to reflect that all requirements for the issuance of
         the same have been satisfied.

               (m) Assignment of Rights. An Assignment by Seller to Purchaser of
                   --------------------
         such rights of Seller under the Stone Contract as are assignable.

               (n) Other Documents. An agreement by Stone and Shaw, in favor of,
                   ---------------
         among other entities, Purchaser, the Bank and the Title Company
         (collectively, the "Indemnitees") in form satisfactory to the
         Indemnitees, indemnifying and holding harmless the Indemnitees from all
         claims, suits, liabilities, obligations, debts, damages, fines,
         penalties, interest, charges, including court costs and reasonable
         attorney's fees relating to all taxes due or claimed to be due with
         respect to the Property covering the period prior to the Closing Date
<PAGE>

         relating to the Tax Dispute. Stone shall not be required to pay such
         taxes at Closing, but if requested by the Title Company or the Bank,
         Seller shall request that Stone deposit the total amount of taxes
         claimed to be due by the applicable taxing authorities together with
         such additional amounts as required by the Title Company to cover
         additional penalties and interest at Closing with the Title Company.
         Such agreement of Stone and Shaw shall expressly provide that it
         survives the Closing and the delivery of the Speical Warranty Deed.

               (o) Other Documents. Such other documents as shall be reasonably
                   ---------------
         required in order to close this transaction.

         12.   Purchaser's Closing Documents. Purchaser shall obtain or execute
               -----------------------------
and deliver to Seller at Closing the following documents, all of which shall be
duly executed by Purchaser and acknowledged where required and shall survive the
Closing:

               (a) Bill of Sale. The Bill of Sale;
                   ------------

               (b) Assignment and Assumption of Lease. The Assignment and
                   ----------------------------------
         Assumption of Leases;

               (c) Settlement Statement. A settlement statement setting forth
                   ---------------------
         the amounts paid by or on behalf of and/or credited to each of
         Purchaser and Seller pursuant to this Agreement;

               (d) Assignment of Intangible Property. Four (4) counterpart
                   ---------------------------------
         originals of the Assignment of Intangible Property, such Assignment of
         Intangible Property to be in substantially the same the form and
         substance as the assignment of intangible property set forth in Exhibit
         C;                                                              -------
         -
               (e) Memorandum of Lease. Four (4) counterpart originals of the
                   -------------------
         Memorandum of Lease for the Stone Lease, which Memorandum of Lease
         shall be in the form set forth in Exhibit D;
                                           ---------

               (f) Assumption of Service Contracts. An assumption by Purchaser
                   -------------------------------
         of the obligations of the owner of the Property under the Service
         Contracts except with respect to those Service Contracts that are
         terminated by Purchaser; and

               (g) Other Documents. Such other documents as shall be reasonably
                   ---------------
         required by Seller's counsel.

         13.   Closing Costs. Seller shall pay the cost of the Title Commitment,
               -------------
including the cost of the examination of title to the Property made in
connection therewith, the premium for the owner's policy of title insurance
issued pursuant thereto (except to the extent the same is payable by Purchaser
as provided in Section 5 above), the cost of the as-built survey, the attorneys'
fees of
<PAGE>

Seller, and all other costs and expenses incurred by Seller in closing and
consummating the purchase and sale of the Property pursuant hereto. Purchaser
shall pay the attorneys' fees of Purchaser, and all other costs and expenses
incurred by Purchaser in closing and consummating the purchase and sale of the
Property pursuant hereto, including third-party inspection fees. Each party
shall pay one-half of any escrow fees.

         14.   Prorations.  Subject to the  provisions of Section 5 hereof, the
               ----------
following items shall be prorated and/or credited between Seller and Purchaser
as of the 11:59 PM immediately preceding the date of Closing:

               (a) Rents. Rents, additional rents, and other income of the
                   -----
         Property (other than security deposits, which shall be assigned and
         paid over to Purchaser) collected by Seller from Tenants for the month
         of Closing. Purchaser shall also receive a credit against the Purchase
         Price payable by Purchaser to Seller at Closing for any rents or other
         sums (not including security deposits) prepaid by Tenants for any
         period following the month of Closing, or otherwise.

               (b) Property Taxes; Utility Charges and Other Operating Expenses.
                   ------------------------------------------------------------
         City, state, county, and school district ad valorem taxes, utility
         charges and other operating expenses, and such taxes will be further
         adjusted, if necessary, upon receipt of the actual tax bill for the
         period adjusted. If such further adjustment is necessary, the same
         shall be adjusted between Stone and Purchaser, so that Purchaser shall
         pay any amount owing to Stone and shall receive any amount due from
         Stone. This agreement to adjust shall survive Closing.

         15.   Purchaser's Default. In the event Purchaser fails to close,
               -------------------
Seller's sole and exclusive remedy shall be to terminate this Agreement and
receive the Earnest Money as liquidated damages; Purchaser and Seller hereby
agree that actual damages would be difficult or impossible to ascertain and such
amount is a reasonable estimate of the damages for such breach or failure, and
thereafter the parties hereto shall have no further rights or obligations
hereunder whatsoever, except as to matters expressly surviving termination.
Seller shall not be limited with respect to any matters expressly surviving such
termination.

              Seller's Initial     GB         Purchaser's Initials     DPW
                              --------------                       ------------

         16.   Seller's Default. In the event Seller fails to close or otherwise
               ----------------
defaults with respect to Closing obligations, (i) Purchaser shall have the right
to terminate this Agreement by giving written notice of such termination to
Seller, whereupon Purchaser and Seller shall have no further rights,
obligations, or liabilities hereunder, except as may be expressly provided to
the contrary herein; or (ii) Purchaser shall have the right to accept title to
the Property subject to defects and objections with no reduction in the Purchase
Price (except for monetary encumbrances, arising by, through or under Seller),
in which event such defects and objections shall be deemed "Permitted
Exceptions;" or (iii) Purchaser may elect to seek specific performance of this
Agreement. Purchaser shall not be limited with respect to any matters expressly
surviving the termination of this Agreement.
<PAGE>

         17.   Condemnation. If, prior to the Closing, all or any part of the
               ------------
Property is subjected to a bona fide threat of condemnation by a body having the
power of eminent domain or is taken by eminent domain or condemnation (or sale
in lieu thereof), or if Seller has received notice that any condemnation action
or proceeding with respect to the Property is contemplated by a body having the
power of eminent domain, Seller shall give Purchaser immediate written notice of
such threatened or contemplated condemnation or of such taking or sale, and
Purchaser may by written notice to Seller given within thirty (30) days of the
receipt of such notice from Seller, elect to cancel this Agreement. If Purchaser
chooses to cancel this Agreement in accordance with this Paragraph 17, then the
rights, duties, obligations, and liabilities of the parties hereunder shall
immediately terminate and be of no further force and effect. If Purchaser does
not elect to cancel this Agreement in accordance herewith, this Agreement shall
remain in full force and effect and the sale of the Property contemplated by
this Agreement, less any interest taken by eminent domain or condemnation, or
sale in lieu thereof, shall be effected with no further adjustment and without
reduction of the Purchase Price, and at the Closing, Seller shall assign,
transfer, and set over to Purchaser all of the right, title, and interest of
Seller in and to any awards that have been or that may thereafter be made for
such taking.

         18.   Damage or Destruction. If any of the Improvements shall be
               ---------------------
destroyed or damaged prior to the Closing, and the estimated cost of repair or
replacement exceeds Five Hundred Thousand Dollars ($500,000.00) or if a Lease
shall terminate as a result of such damage, Purchaser may, by written notice
given to Seller within twenty (20) days after receipt of written notice from
Seller of such damage or destruction, elect to terminate this Agreement, in
which event, except as expressly provided herein to the contrary, the rights,
duties, obligations, and liabilities of all parties hereunder shall immediately
terminate and be of no further force or effect. If Purchaser does not elect to
terminate this Agreement pursuant to this Paragraph 18, or has no right to
terminate this Agreement (because the damage or destruction does not exceed
$500,000.00 and the Leases remain in full force and effect), and the sale of the
Property is consummated, Purchaser shall be entitled to receive all insurance
proceeds paid or payable to Seller by reason of such destruction or damage under
the insurance maintained by Seller (less amounts of insurance theretofore
received and applied by Seller to restoration). If the amount of said casualty
or rent loss insurance proceeds is not settled by the date of Closing, Seller
shall execute at Closing all proofs of loss, assignments of claim, and other
similar instruments to ensure that Purchaser shall receive all of Seller's
right, title, and interest in and under said insurance proceeds.

         19.   Hazardous Substances. Seller hereby warrants and represents,to
               --------------------
Seller's Knowledge, that (i) no "hazardous substances," as that term is defined
in the Comprehensive Environmental Response, Compensation and Liability Act of
1980, as amended, 42 U.S.C. Section 9601, et. seq., the Resource Conservation
                                          --  ---
and Recovery Act, as amended, 42 U.S.C. Section 6901 et. seq., and the rules and
                                                     --  ---
regulations promulgated pursuant to these acts, any so-called "super-fund" or
"super-lien" laws or any applicable state or local laws, nor any other
pollutants, toxic materials, or contaminants have been or shall prior to Closing
be discharged, disbursed, released, disposed of, or allowed to escape on the
Property, (ii) no asbestos or asbestos containing materials are present on the
Land and Improvements, except in amounts permitted under applicable
environmental laws, (iii) no polychlorinated biphenyls are located on or in the
Land and Improvements except in amounts
<PAGE>

permitted under applicable environmental laws, (iv) no underground storage tanks
for Hazardous Substances are located on the Property, and (v) no investigation,
administrative order, consent order and agreement, litigation, or settlement
with respect to Hazardous Substances is proposed, threatened, anticipated or in
existence with respect to the Property.

         20.   Assignment.  Purchaser's  rights and duties  under this
               ----------
Agreement shall not be assignable except to an affiliate of Purchaser without
the consent of Seller which consent shall not be unreasonably withheld. Seller
may assign this Agreement to an affiliate of Seller formed to take title to the
Property.

         21.   Broker's Commission. Purchaser and Seller hereby represent, each
               -------------------
to the other, that they have not discussed this Agreement or the subject matter
hereof with any real estate broker or agent other than The Roylston Group
("Broker"), which Seller agrees to pay pursuant to a separate agreement, so as
to create any legal right in any such broker or agent to claim a real estate
commission with respect to the conveyance of the Property contemplated by this
Agreement. Seller shall and does hereby indemnify and hold harmless Purchaser
from and against any claim, whether or not meritorious, for any real estate
sales commission, finder's fees, or like compensation in connection with the
sale contemplated hereby and arising out of any act or agreement of Seller.
Likewise, Purchaser shall and does hereby indemnify and hold harmless Seller
from and against any claim, whether or not meritorious, for any real estate
sales commission, finder's fees, or like compensation in connection with the
sale contemplated hereby and arising out of any act or agreement of Purchaser.
This Paragraph 21 shall survive the Closing or any termination of this
Agreement.

         22.   Notices. Wherever any notice or other communication is required
               -------
or permitted hereunder, such notice or other communication shall be in writing
and shall be delivered by overnight courier or by hand to the addresses set out
below or at such other addresses as are specified by written notice delivered in
accordance herewith:

         PURCHASER:                     c/o Wells Capital, Inc.
                                        6200 The Corners Parkway, Suite 250
                                        Norcross, Georgia 30092
                                        Attn: Mr. Michael C. Berndt
                                        Fax No. 770-840-7224

         with a copy to:                O'Callaghan & Stumm LLP
                                        127 Peachtree Street, N. E., Suite 1330
                                        Atlanta, Georgia 30303
                                        Attn: William L. O'Callaghan, Esq.
                                        Fax No. 404-522-3080

         SELLER:                        c/o Cardinal Capital Partners, Inc.
                                        Attn: Mr. Gil J. Besing
                                        8411 Preston Road, Suite 850

<PAGE>

                                        Dallas, Texas 75225
                                        Fax No. 214-696-9845

         with a copy to:                Goldfarb & Fleece
                                        Attn: Steven B. Shore, Esq.
                                        345 Park Avenue, 33/rd/ Fl.
                                        New York, New York 10154
                                        Fax No. 212-751-3738

         Any notice or other communication sent as hereinabove provided shall be
deemed effectively given or received on the date of delivery whether delivered
by hand or by overnight courier.

         23.   Possession.   Possession of the Property  shall be granted by
               ----------
Seller to Purchaser on the date of Closing, subject only to the Leases and the
Permitted Exceptions.

         24.   Time Periods. If the time period by which any right, option, or
               ------------
election provided under this Agreement must be exercised, or by which any act
required hereunder must be performed, or by which the Closing must be held,
expires on a Saturday, Sunday, or holiday, then such time period shall be
automatically extended through the close of business on the next regularly
scheduled business day.

         25.   Survival of Provisions. All covenants, warranties, and agreements
               ----------------------
set forth in this Agreement shall survive the execution or delivery of any and
all deeds and other documents at any time executed or delivered under, pursuant
to, or by reason of this Agreement, and shall survive the payment of all monies
made under, pursuant to, or by reason of this Agreement for a period of twelve
(12) months from Closing, except with respect to paragraph 19 which shall
survive for twenty-four (24) months.

         26.   Severability. This Agreement is intended to be performed in
               ------------
accordance with, and only to the extent permitted by, all applicable laws,
ordinances, rules, and regulations. If any provision of this Agreement, or the
application thereof to any person or circumstance, shall, for any reason and to
any extent, be invalid or unenforceable, the remainder of this Agreement and the
application of such provision to other persons or circumstances shall not be
affected thereby but rather shall be enforced to the greatest extent permitted
by law.

         27.   Authorization. Purchaser represents to Seller that this Agreement
               -------------
has been duly authorized and executed on behalf of Purchaser and constitutes the
valid and binding agreement of Purchaser, enforceable in accordance with its
terms, and all necessary action on the part of Purchaser to authorize the
transactions herein contemplated has been taken, and no further action is
necessary for such purpose.

         28.   General Provisions. No failure of either party to exercise any
               ------------------
power given hereunder or to insist upon strict compliance with any obligation
specified herein, and no custom or practice at variance with the terms hereof,
shall constitute a waiver of either party's right to
<PAGE>

demand exact compliance with the terms hereof. This Agreement contains the
entire agreement of the parties hereto, and no representations, inducements,
promises, or agreements, oral or otherwise, between the parties not embodied
herein shall be of any force or effect. Any amendment to this Agreement shall
not be binding upon the parties hereto unless such amendment is in writing and
executed by all parties hereto. The provisions of this Agreement shall inure to
the benefit of and be binding upon the parties hereto and their respective
heirs, legal representatives, successors, and assigns. Time is of the essence of
this Agreement. This Agreement may be executed in multiple counterparts, each of
which shall constitute an original, but all of which taken together shall
constitute one and the same agreement. The headings inserted at the beginning of
each paragraph are for convenience only, and do not add to or subtract from the
meaning of the contents of each paragraph. This Agreement shall be construed and
interpreted under the laws of the State of Texas. Except as otherwise provided
herein, all rights, powers, and privileges conferred hereunder upon the parties
shall be cumulative but not restrictive to those given by law. All personal
pronouns used in this Agreement, whether used in the masculine, feminine, or
neuter gender shall include all genders, and all references herein to the
singular shall include the plural and vice versa.

         29.   Effective Date.   The  "effective  date" of this  Agreement
               --------------
shall be deemed to be the date this Agreement is fully executed by both
Purchaser and Seller.

         30.   Duties as Escrow Agent. In performing its duties hereunder,
               ----------------------
Escrow Agent shall not incur any liability to anyone for any damages, losses or
expenses, except for its gross negligence or willful misconduct, and it shall
accordingly not incur any such liability with respect to any action taken or
omitted in good faith upon advice of its counsel or in reliance upon any
instrument, including any written notice or instruction provided for in this
Agreement, not only as to its due execution and the validity and effectiveness
of its provision, but also as to the truth and accuracy of any information
contained therein that Escrow Agent shall in good faith believe to be genuine,
to have been signed or presented by a proper person and to conform to the
provisions of this Agreement. Seller and Purchaser hereby agree to indemnify and
hold harmless Escrow Agent against any and all losses, claims, damages,
liabilities and expenses, including reasonable costs of investigation and legal
fees and disbursements, that may be imposed upon Escrow Agent or incurred by
Escrow Agent in connection with its acceptance or performance of its duties
hereunder as escrow agent, including without limitation, any litigation arising
out of this Agreement. If any dispute shall arise between Seller and Purchaser
sufficient in the discretion of Escrow Agent to justify its doing so, Escrow
Agent shall be entitled to tender into the registry or custody of the clerk of
the Court for the county in which the Property is located or the clerk for the
United States District Court having jurisdiction over the county in which the
Property is located, any or all money (less any sums required to pay Escrow
Agent's attorneys' fees in filing such action), property or documents in its
hands relating to this Agreement, together with such pleadings as it shall deem
appropriate, and thereupon be discharged from all further duties under this
Agreement. Seller and Purchaser shall bear all costs and expenses of any such
legal proceedings.

         31.   Confidentiality. Pending the Closing, Purchaser and Seller agree
               ---------------
to keep the terms of this Agreement, and the existence thereof, strictly
confidential; provided, however, reasonable disclosure may be made to the
parties attorneys, accountants, advisors, lenders, prospective lenders,
<PAGE>

investors, prospective investors and other persons whose involvement in the
transaction requires such disclosure. Purchaser shall not in no event contact
Stone nor inform Stone of the existence of this Agreement.

         32.   (a) This Agreement is subject to and conditioned upon Purchaser's
obtaining a written loan commitment for a loan (the "Acquisition Loan") on or
before the expiration of the Feasability Period TIME BEING OF THE ESSENCE (the
                                                -------------------------
"Loan Contingency Deadline"), from a national banking association or other
lender (the "Bank"), in the amount of $35,970,000.00. All costs with respect to
the Acquisition Loan, its acquisition, negotiation and closing shall be borne by
Seller except that Purchaser shall pay its own legal and entity organizational
fees in connection therewith. In the event the Bank does not issue a loan
commitment ("Loan Commitment") to Purchaser by the Loan Contingency Deadline,
Purchaser shall have the right to terminate this Contract provided that Seller
receives written notice of such termination prior to the Loan Contingency
Deadline, TIME BEING OF THE ESSENCE. Unless extended in writing by Seller, the
          -------------------------
contingency contained in this Section 32 shall expire and be of no force and
effect after the Loan Contingency Deadline.

               (b) Purchaser agrees to make prompt application for, and to
diligently pursue obtaining, a Loan Commitment from the Bank. Purchaser shall
pay for and submit the application for the Acquisition Loan within five (5) days
of the date of this Agreement and provide evidence of such application to
Seller. Purchaser agrees to promptly provide and/or execute such financial and
other information and documents as the Bank may reasonably request in order to
make the Acquisition Loan. Notwithstanding the foregoing, Seller shall reimburse
Purchaser for the fee and other costs paid by Purchaser to the Bank in
connection with the application for a Loan Commitment or in connection with the
Loan Commitment itself in the event that, prior to the expiration of the
Feasability Period, Purchaser certifies to Seller the nature of the
Unsatisfactory Condition and Seller fails to cure the Unsatisfactory Condition
prior to the expiration of the Cure Period.

         33.   Seller's Loan. At Closing, Purchaser shall execute a Purchase
               -------------
Money Note in favor of Seller (the "Purchase Note") in the amount of Three
Million Dollars ($3,000,000.00) (the "Seller's Loan"), which Purchase Note shall
be in the form attached hereto as Exhibit E. Seller's Loan shall bear interest
                                  ---------
at the annual rate of six percent (6%) on the outstanding principal balance of
the Seller's Loan and shall be due in full to Seller on the earlier to occur of
(i) the payment in full of the Acquisition Loan, or (ii) the date that is six
(6) months subsequent to the Closing Date (the earlier date being the "Maturity
Date"). Seller's Loan may be prepaid, in whole or in partial increments of Fifty
Thousand Dollars ($50,000.00), at any time provided that Purchaser gives Seller
written notice of such prepayment at least two weeks prior thereto. Interest
shall be payable in full on the Maturity Date. In addition, the Purchase Note
shall be secured by a deed of trust in the form attached hereto as Exhibit F in
                                                                   ---------
favor of Seller that encumbers the Land and Improvements (the "Deed of Trust"),
which Deed of Trust shall be subordinate to any deed of trust that may secure
the Acquisition Loan

                           [Signature Page Follows]
<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed and their respective seals to be affixed hereunto as of the day,
month and year first above written.

SELLER:

CARDINAL PARAGON, INC.,
a Texas corporation

By: /s/ Gil J. Besing
   -----------------------------------
        Gil J. Besing, Vice President

PURCHASER:

WELLS OPERATING PARTNERSHIP, L.P., a Delaware limited partnership

By:      WELLS REAL ESTATE INVESTMENT TRUST, a Maryland real estate investment
         trust, its general partner

         By: /s/ Douglas P. Williams
            --------------------------------------------------
         Printed Name: Douglas P. Williams
         Title: Executive Vice President
<PAGE>

                                    EXHIBIT A
                                    ---------

                                LAND DESCRIPTION

Being all of the Unrestricted Reserve "I" in Block Six (6) of Partial Replat of
Enclave, a subdivision in Harris County, Texas according to the map or plat
thereof recorded in Volume 328, Page 13 of the Map Records of Harris County,
Texas.

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