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| (i) | included      within the definitions of "hazardous substances," "hazardous materials,"      "toxic substances," or "solid waste" in or pursuant to any Environmental      Law, or subject to regulation under any Environmental  Law; |
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|         (iii) | explosive,      radioactive, friable asbestos, a polychlorinated biphenyl, petroleum or a      petroleum product or waste oil. |
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|              (i)   | obligations      of, or obligations fully guaranteed as to payment of principal and      interest by, the United States or any agency or instrumentality thereof      provided such obligations are backed by the full faith and credit of the      United States of America including, without limitation, obligations of the      U.S. Treasury (all direct or fully guaranteed obligations), the Farmers      Home Administration (certificates of beneficial ownership), the General      Services Administration (participation certificates), the U.S. Maritime      Administration (guaranteed Title XI financing), the Small Business      Administration (guaranteed participation certificates and guaranteed pool      certificates), the U.S. Department of Housing and Urban Development (local      authority bonds), and the Washington Metropolitan Area Transit Authority      (guaranteed transit bonds); provided, however, that the investment      described in this clause must (A) have a predetermined fixed dollar of      principal due at maturity that cannot vary or change, (B) if rated by      S&P, must not have an "r" highlighter affixed to their rating, (C) if      such investments have a variable rate of interest, such interest rate must      be tied to a single interest rate index plus a fixed spread (if any) and      must move proportionately with that index, and (D) such investments must      be not subject to liquidation prior to their  maturity; |
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|   | (iii) | obligations      of the following United States government sponsored agencies: Federal Home      Loan Mortgage Corp. (debt obligations), the Farm Credit System      (consolidated systemwide bonds and notes), the Federal Home Loan Banks      (consolidated debt obligations), the Federal National Mortgage Association      (debt obligations), the Student Loan Marketing Association (debt      obligations), the Financing Corp. (debt obligations), and the Resolution      Funding Corp. (debt obligations); provided, however, that the investments      described in this clause must (A) have a predetermined fixed dollar of      principal due at maturity that cannot vary or change, (B) if rated by      S&P, must not have an "r" highlighter affixed to their rating, (C) if      such investments have a variable rate of interest, such interest rate must      be tied to a single interest rate index plus a fixed spread (if any) and      must move proportionately with that index, and (D) such investments must      not be subject to liquidation prior to their  maturity; |
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|   | (iv) | federal      funds, unsecured certificates of deposit, time deposits, bankers'      acceptances and repurchase agreements with maturities of not more than 365      days of any bank, the short term obligations of which at all times are      rated in the highest short term rating category by each Rating Agency (or,      if not rated by any Rating Agency other than S&P, otherwise acceptable      to such Rating Agency or Agencies, as applicable, as confirmed in writing      that such investment would not, in and of itself, result in a downgrade,      qualification or withdrawal of the then current ratings assigned to the      Securities); provided, however, that the investments described in this      clause must (A) have a predetermined fixed dollar of principal due at      maturity that cannot vary or change, (B) if rated by S&P, must not      have an "r" highlighter affixed to their rating, (C) if such investments      have a variable rate of interest, such interest rate must be tied to a      single interest rate index plus a fixed spread (if any) and must move      proportionately with that index, (D) such investment must not be subject      to liquidation prior to theirmaturity; |
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|   | (v) | fully      Federal Deposit Insurance Corporation-insured demand and time deposits in,      or certificates of deposit of, or bankers' acceptances issued by, any bank      or trust company, savings and loan association or savings bank, the short      term obligations of which at all times are rated in the highest short term      rating category by each Rating Agency (or, if not rated by any Rating      Agency other than S&P, otherwise acceptable to such Rating Agency or      Agencies, as applicable, as confirmed in writing that such investment      would not, in and of itself, result in a downgrade, qualification or      withdrawal of the then current ratings assigned to the Securities);      provided, however, that the investments described in this clause must (A)      have a predetermined fixed dollar of principal due at maturity that cannot      vary or change, (B) if rated by S&P, must not have an "r" highlighter      affixed to their rating, (C) if such investments have a variable rate of      interest, such interest rate must be tied to a single interest rate index      plus a fixed spread (if any) and must move proportionately with that      index, and (D) such investments must not be subject to liquidation prior      to their maturity; |
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|   | (vi) | debt      obligations with maturities of not more than 365 days and at all times      rated by each Rating Agency (or, if not rated by any Rating Agency other      than S&P, otherwise acceptable to such Rating Agency or Agencies, as      applicable, as confirmed in writing that such investment would not, in and      of itself, result in a downgrade, qualification or withdrawal of the then      current ratings assigned to the Securities) in its highest long-term      unsecured rating category; provided, however, that the investments      described in this clause must (A) have a predetermined fixed dollar of      principal due at maturity that cannot vary or change, (B) if rated by      S&P, must not have an "r" highlighter affixed to their rating, (C) if      such investments have a variable rate of interest, such interest rate must      be tied to a single interest rate index plus a fixed spread (if any) and      must move proportionately with that index, and (D) such investments must      not be subject to liquidation prior to their  maturity; |
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|   | (vii) | commercial      paper (including both non-interest-bearing discount obligations and      interest-bearing obligations payable on demand or on a specified date not      more than one year after the date of issuance thereof) with maturities of      not more than 365 days and that at all times is rated by each Rating      Agency (or, if not rated by any Rating Agency other than S&P,      otherwise acceptable to such Rating Agency or Agencies, as applicable, as      confirmed in writing that such investment would not, in and of itself,      result in a downgrade, qualification or withdrawal of the then current      ratings assigned to the Securities) in its highest short-term unsecured      debt rating; provided, however, that the investments described in this      clause must (A) have a predetermined fixed dollar of principal due at      maturity that cannot vary or change, (B) if rated by S&P, must not      have an "r" highlighter affixed to their rating, (C) if such investments      have a variable rate of interest, such interest rate must be tied to a      single interest rate index plus a fixed spread (if any) and must move      proportionately with that index, and (D) such investments must not be      subject to liquidation prior to theirmaturity; |
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|   | (viii) | the      Federal Prime Obligation Money Market Fund so long as such fund is rated      "AAA" by each Rating Agency (or, if not rated by any Rating Agency other      than S&P, otherwise acceptable to such Rating Agency or Agencies, as      applicable, as confirmed in writing that such investment would not, in and      of itself, result in a downgrade, qualification or withdrawal of the then      current ratings assigned to the Securities);and |
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|   | (ix) | any      other demand, money market or time deposit, demand obligation or any other      obligation, security or investment, provided that each Rating Agency has      confirmed in writing to the Lender, that such investment would not, in and      of itself, result in a downgrade, qualification or withdrawal of the then      current ratings assigned to theSecurities; |
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| (i) | was      and will be organized solely for the purpose of (w) owning an interest in      the Mortgaged Property and owning the sole beneficial interest in a trust      which owns an interest in the Mortgaged Property, and owning (1) the stock      of the sole general partner of a limited partnership which owns an      interest in the Mortgaged Property and (2) the sole limited partnership      interest in such limited partnership or (x) acting as the managing member      of the limited liability company which owns an interest in the Mortgaged      Property or which is the sole beneficial owner of the trust which owns an      interest in the Mortgaged Property or (y) acting as the general partner of      a limited partnership which owns an interest in the Mortgaged Property or      (z) acting as the sole beneficiary of a trust which owns an interest in      the Mortgaged Property; |
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| (ii) | has      not and will not engage in any business unrelated to (w) the ownership and      leasing of an interest in the Mortgaged Property, and the ownership of the      sole beneficial interest in a trust which owns an interest in the      Mortgaged Property, and the ownership of (1) the stock of the sole general      partner of a limited partnership which owns an interest in the Mortgaged      Property and (2) the sole limited partner interest in such limited      partnership, or (x) acting as a managing member of a limited liability      company which owns an interest in the Mortgaged Property or which is the      sole beneficial owner of the trust which owns an interest in the Mortgaged      Property or (y) acting as a general partner of a limited partnership which      owns an interest in the Mortgaged Property or (z) acting as the sole      beneficiary of a trust which owns an interest in the Mortgaged Property,      and will conduct and operate its business as presently conducted and      operated; |
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| (iii) | has      not and will not have any assets other than (w) those related to the      Mortgaged Property, and the ownership of the sole beneficial interest in a      trust which owns an interest in the Mortgaged Property, and the ownership      of (1) the stock of the sole general partner of a limited partnership      which owns an interest in the Mortgaged Property and (2) the sole limited      partner interest in such limited partnership or (x) its member interest in      the limited liability company which owns an interest in the Mortgaged      Property or which is the sole beneficial owner of the trust which owns an      interest in the Mortgaged Property or (y) its general partnership interest      in the limited partnership which owns an interest in the Mortgaged      Property or (z) its beneficial interest in a trust which owns an interest      in the Mortgaged Property, asapplicable; |
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| (iv) | will      do all things necessary to preserve its existence, has not and will not      engage in, seek or consent to any dissolution, winding up, liquidation,      consolidation or merger, (y) except as otherwise expressly permitted by      this Indenture, has not and will not engage in, seek or consent to any      asset sale, transfer of partnership, membership, shareholder or beneficial      interests, and (z) without the prior written consent of Lender, will not      amend, modify or otherwise change its partnership agreement, articles of      incorporation, articles of organization, certificate of formation,      operating agreement, limited liability company agreement, trust agreement      or trust certificate (as applicable) and will not permit a constituent      party to cause the amendment or modification of such constituent agreement      of such Single Purpose Entity, or other change  thereto; |
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|  (v) | if      such entity is a limited partnership, has and will have as its only      general partners, general partners which are and will be Single-Purpose      Entities which are corporations; |
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| (vi) | if      such entity is a trust, has and will have as its trustee, an Independent      Trustee, has not taken and will not take any action requiring the consent      of such Independent Trustee unless such Independent Trustee has consented      thereto, and, unless it is a Delaware Business Trust, has and will have as      its sole beneficial owner, a beneficial owner which is a Single-Purpose      Entity; |
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| (ix) | has      not and will not fail to correct any known misunderstanding regarding the      separate identity of such entity; |
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| (x) | if      such entity is a limited liability company, has and will have at least one      member that is and will be a Single-Purpose Entity which is and will be a      corporation, and such corporation is and will be the managing member of      such limited liability company; |
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| (xi) | without      the unanimous consent of all of the partners, directors (including without      limitation all Independent Directors), members, beneficial owners or      trustees (including without limitation the Independent Trustee), as      applicable, has not and will not with respect to itself or to any other      entity in which it has a direct or indirect legal or beneficial ownership      interest (a) file a bankruptcy, insolvency or reorganization petition or      otherwise institute insolvency proceedings or otherwise seek any relief      under any laws relating to the relief from debts or the protection of      debtors generally; (b) seek or consent to the appointment of a receiver,      liquidator, assignee, trustee, sequestrator, custodian or any similar      official for such entity or all or any portion of such entity's      properties; (c) make any assignment for the benefit of such entity's      creditors; or (d) take any action that might cause such entity to become      insolvent; |
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| (xii) | has      maintained and will maintain its accounts, books and records separate from      any other Person; |
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| (xiii) | has      maintained and will maintain its books, records, resolutions and      agreements as official records; |
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|  (xiv) | has      not commingled and will not commingle its funds or assets with those of      any other Person; |
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| (xv) | has      held and will hold its assets in its own name and has maintained and will      maintain its assets in such a manner that it will not be costly or      difficult to segregate, ascertain or identify its individual assets from      those of any Affiliate or constituent party or any other      Person; |
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| (xvii) | has      maintained and will maintain its books, records, financial statements,      accounting records, bank accounts and other entity documents separate from      any other person or entity, and will file its own tax    returns; |
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| (xix) | has      observed and will observe all partnership, corporate, limited liability      company or trust formalities asapplicable; |
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| (xxi) | (a)      if such entity owns an interest in the Mortgaged Property, has and will      have no indebtedness, secured or unsecured, direct or indirect, absolute      or contingent (including guaranteeing any obligation), other than the      Indebtedness and unsecured trade payables in the ordinary course of      business relating to the ownership and operation of the Mortgaged Property      which are paid within thirty (30) days of the date incurred, or (b) if      such entity acts as the general partner of a limited partnership which      owns an interest in the Mortgaged Property, has and will have no      indebtedness, secured or unsecured, direct or indirect, absolute or      contingent (including guaranteeing any obligation), other than unsecured      trade payables in the ordinary course of business relating to acting as a      general partner of such limited partnership which are paid within thirty      (30) days of the date incurred, (c) if such entity acts as a managing      member of a limited liability company which is the beneficial owner of a      trust which owns an interest in the Mortgaged Property, has and will have      no indebtedness, secured or unsecured, direct or indirect, absolute or      contingent (including guaranteeing any obligation), other than unsecured      trade payables in the ordinary course of business relating to acting as a      member of such limited liability company which are paid within thirty (30)      days of the date incurred, or (d) if such entity is a beneficial owner of      a trust which owns an interest in the Mortgaged Property and such      beneficial owner is required to be a Single Purpose Entity pursuant to the      provisions of this Indenture, has and will have no indebtedness, secured      or unsecured, direct or indirect, absolute or contingent (including      guaranteeing any obligation), other than [Pool IV and IX only: the      Indebtedness and] unsecured trade payables in the ordinary course of      business relating to acting as a beneficial owner of such trust which are      paid within thirty (30) days of the date  incurred; |
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| (xxii) | has      not and will not assume or guaranty or become obligated for the debts of      any other Person and has not and will not hold itself out to be      responsible for the debts or obligations of any other    Person; |
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| (xxiii) | has      not acquired and will not acquire obligations or securities of its      partners, members, beneficial owners, trustees, shareholders or other      Affiliates; |
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| (xxiv) | is      and will remain solvent, will pay its debts and liabilities as they become      due and has allocated and will allocate fairly and reasonably shared      expenses, including, without limitation, shared office    space; |
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| (xxv) | except      pursuant hereto, has not and will not pledge its assets for the benefit of      any other Person; |
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| (xxvi) | has      held and identified itself and will hold itself out and identify itself as      a separate and distinct entity under its own name and not as a division or      part of any other Person and will maintain and utilize separate      stationary, invoices and checks; |
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| (xxvii) | has      not made and will not make loans or advances to any Person (excluding      advances which Owner is permitted to make as landlord under the Master      Lease); |
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| (xxviii) | has      not and will not identify its partners, members, beneficial owners,      trustees or shareholders, or any Affiliates of any of them as a division      or part of it; |
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| (xxix) | if      such entity is a limited liability company, such entity shall dissolve      only upon the bankruptcy of the managing member, and such entity's      articles of organization, certificate of formation, limited liability      company agreement and/or operating agreement, as applicable, shall contain      such provision; |
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| (xxx) | has      not entered and will not enter into or be a party to, any transaction,      contract or agreement with its partners, members, beneficial owners,      trustees, shareholders or its Affiliates except in the ordinary course of      its business and on terms which are intrinsically fair and are no less      favorable to it than would be obtained in a comparable arms-length      transaction with an unrelated thirdparty; |
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| (xxxii) | has      maintained and will maintain adequate capital for the normal obligations      reasonably foreseeable in its contemplated business and in light of its      contemplated business operations;and |
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| (xxxiii) | if      such entity is a limited liability company, limited partnership or trust,      and such entity has one or more managing members, general partners or      trustees, as applicable, then such entity shall continue (and not      dissolve) for so long as a solvent managing member, general partner or      trustee, as applicable, exists and such entity's organizational documents      shall contain such provision. |
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|                                             (i)   | no      Event of Default shall have occurred and be  continuing; |
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|                                             (i)   | any      Transfer made in accordance with Section  2.16(a); |
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|    |  (2) | Memorandum      of Master Lease with respect to the Substitute  Project, |
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|   | (4) | Confirmation      of Master Lease Guaranty by Master Lease Guarantor with respect to the      Substitute Project, |
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|   | (10) | Two      or three UCC Financing Statements with respect to the Substitute Project      as recommended by local counsel to be recorded in appropriate county and      state offices. |
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| (E) | Lender      shall have received (1) any "tie-in" or similar endorsement to each Title      Insurance Policy insuring the Lien of the existing Indenture as of the      date of the Substitution available with respect to the Title Insurance      Policy insuring the Lien of the Indenture with respect to the Substitute      Project and (2) a Title Insurance Policy (or a marked, signed and re-dated      commitment to issue such Title Insurance Policy) insuring the Lien of the      Indenture encumbering the Substitute Project, issued by the title company      that issued the Title Insurance Policies insuring the Lien of the existing      Indenture and dated as of the date of the Substitution and re-dated as of      the date of recording, with reinsurance and direct access agreements that      replace such agreements issued in connection with the Title Insurance      Policy insuring the Lien of the Indenture encumbering the Replaced      Project. The Title Insurance Policy issued with respect to the Substitute      Project shall (1) provide coverage in the amount of the Allocated Property      Debt if the "tie-in" or similar endorsement described above is available      or, if such endorsement is not available, in an amount equal to one      hundred fifty percent (150%) of such Allocated Property Debt, (2) insure      Lender that the Indenture creates a valid first Lien on the Substitute      Project encumbered thereby, free and clear of all exceptions for coverage      other than Permitted Encumbrances and standard exceptions and exclusions      from coverage (and as modified by the terms of any endorsements), (3)      contains such endorsements and affirmative coverages as are contained in      the Title Insurance Policies insuring the Liens of the Existing Indenture      with respect to the other Mortgaged Properties or as may be necessitated      by the facts and circumstances of the Substitute Project, subject to state      law limitations with respect to such endorsements, and (4) name Lender as      the insured. Lender also shall have received copies of paid receipts      showing that all premiums in respect of such endorsements and Title      Insurance Policies have been paid. Lender shall have received (1) an      endorsement to the Title Insurance Policy insuring the Lien of the      Indenture encumbering the Substitute Project insuring that the Substitute      Project constitutes a separate tax lot or, if such an endorsement is not      available in the state in which the Substitute Project is located, a      letter from the title insurance company issuing such Title Insurance      Policy stating that the Substitute Project constitutes a separate tax lot      or (2) a letter from the appropriate taxing authority stating that the      Substitute Project constitutes a separate tax  lot. |
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| (F) | Each      of Owner and Remainderman shall deliver to Lender (1) updates certified by      it of all organization documentation related to it and/or the formation,      structure, existence, good standing and/or qualification to do business      similar to that delivered to Lender in connection with the origination of      the Loan; (2) good standing certificates, certificates of qualification to      do business in the jurisdiction in which the Substitute Project is located      (if required in such jurisdiction) and (3) evidence of the authority for      it to undertake the Substitution and any actions taken in connection with      such Substitution. |
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| (G) | Lender      shall have received the following opinions of counsel:  (1) an      opinion or opinions of counsel admitted to practice under the laws of the      state in which the Substitute Project is located stating that the      Operative Documents delivered with respect to the Substitute Project      pursuant to clause (D) above are valid and enforceable in accordance with      their terms, subject to the laws applicable to creditors' rights and      equitable principles, and that each of Owner and Remainderman is qualified      to do business and in good standing under the laws of the jurisdiction      where the Substitute Project is located or that such entity is not      required by applicable law to qualify to do business in such jurisdiction;      (2) an opinion of the respective counsel of each of Owner and of      Remainderman acceptable to the Rating Agencies stating that the Operative      Documents delivered by Owner or by Remainderman with respect to the      Substitute Project pursuant to clause (D) above were duly authorized,      executed and delivered by such entity and that the execution and delivery      of such Operative Documents and the performance by such entity of its      respective obligations thereunder will not cause a breach of, or a default      under, any agreement, document or instrument to which such entity is a      party or to which it or its properties are bound; (3) an opinion of      counsel acceptable to the Rating Agencies and which would be reasonably      satisfactory to a prudent lending institution making a loan similar to the      Loan stating that subjecting the Substitute Project to the Lien of the      related Indenture and the execution and delivery of the related Loan      Documents does not and will not affect or impair the ability of Lender to      enforce its remedies under all of the Loan Documents or to realize the      benefits of the cross-collateralization provided for thereunder; and (4)      an update of the nonconsolidation opinion delivered by Owner's counsel in      connection with the origination of the Loan indicating that the      Substitution does not affect the opinions set forth    therein. |
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| (H) | If      any amount is required to be deposited in escrow by Tenant to cover      deferred maintenance with respect to the Substitute Project, such amount      shall be deposited into and held in the Restoration Account and disbursed      as if such amount constituted Loss Proceeds pursuant to Section      2.4(g). |
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| (I) | Lender      shall have received the following with respect to the Residual Value      Insurer and the Residual Value Policy: (1) a certificate of the Residual      Value Insurer stating that the representations and warranties contained in      the closing certificate delivered by it pursuant to the Loan Agreement are      true and correct in all material respects on and as of the date on which      the Substitution is concluded with respect to itself and any amendment or      supplement to the Residual Value Policy in connection with such      Substitution and containing such other representations and warranties as      Lender or the Rating Agencies may require, (2) an incumbency certificate      with respect to the Residual Value Insurer attaching its organizational      documents and including evidence of good standing and of the Residual      Value Insurer's authority to execute and deliver the amendment or      supplement to the Residual Value Policy in connection with such      Substitution, and (3) an opinion of counsel of Residual Value Insurer      acceptable to the Rating Agencies stating that the amendment or supplement      to the Residual Value Policy delivered by Residual Value Insurer with      respect to the Substitute Project is duly authorized, executed and      delivered by the Residual Value Insurer and is legal, valid, binding and      enforceable in accordance with its terms, and that the execution and      delivery thereof and performance by the Residual Value Insurer of its      obligations under the Residual Value Policy in connection therewith will      not cause a breach of, or default under any agreement, document or      instrument to which the Residual Value Insurer is a party or by which it      or its properties or bound and covering such other matters as may be      required by the Rating Agencies. |
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| (J) | Owner      shall submit to Lender, not less than thirty (30) days prior to the date      of such substitution, a release of Lien (and related Loan Documents) for      the Substitute Project for execution by Lender. Such release shall be in a      form appropriate for the jurisdiction in which the Substitute Project is      located. |
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|                                     (i)   | Permitted      Encumbrances; |
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| (A) | Equity      interests in Owner are publicly offered securities, within the meaning of      29 C.F.R. §2510.3-101(b)(2); |
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| (B) | Less      than twenty-five percent (25%) of each outstanding class of equity      interests in Owner are held by "benefit plan investors" within the meaning      of 29 C.F.R. §2510.3-101(f)(2); or |
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| (C) | Owner      qualifies as an "operating company" or a "real estate operating company"      within the meaning of 29 C.F.R. §2510.3-101(c) or (e) or an investment      company registered under The Investment Company Act of    1940. |
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| (1)   | Disposition of      Proceeds of Sale and Other Amounts Received UnderArticle 4.      Except to |
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|   | ARTICLE      5 |
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|   | Miscellaneous |
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