Document:

<PAGE>   1
                                                                    Exhibit 10.6

                             SALES AGENCY AGREEMENT

THIS AGREEMENT is made as of the 19th day of September 1999, by and

BETWEEN; Hedman Resources Limited. ("PRINCIPAL") whose principal business
address is located at 106 Fielding Road, Lively, Ontario P3Y IL5

                                      AND

TECHNOLOGY DEVELOPMENT SERVICES LTD. ("AGENCY") whose principal business
address is located at Management International Bldg. East Bay, Street, P.O.
N-8198 Nassau, the Bahamas

WHEREAS, THE PARTIES HAVE MUTUALLY AGREED TO ENTER INTO AN EXCLUSIVE SALES
AGENCY AGREEMENT FOR THE DISTRIBUTION & MARKETING OF "SUPERFIL" SOLELY TO THE
PLASTIC/POLYMER INDUSTRY WORLDWIDE

NOW THEREFORE, in consideration of the parties, it is agreed:

1.        EXCLUSIVE REPRESENTATION:

          Principal grants to Agency the exclusive right to act as Principal's
          representative, to solicit orders for the Principal's sole industrial
          mineral coined "Superfil" from all segments of the plastic/polymer
          industries including but not limited to produces, manufacturers,
          compounders, molders, and fabricators.

          Agency under the terms of this agreement and upon the signing of this
          agreement has the world distribution rights of Superfil.

          (exclusions if any, are certain accounts in the plastic/polymer
          industry that the agent at his own discretion may not wish to
          solicite) Principal must receive written approval from the Agent prior
          to solicitation of the client.

2.        SALES POLICIES:

          The prices, charges and terms of sale of the Principals products
          ("Sales Policies") shall be established by the Principal. The Sales
          Policies shall be those currently in effect and established from time
          to time by the Principal in its price books, bulletins, and other
          authorized releases. Written notice of each Sales Policy change shall
          be given by the Principal to the Agency at least ninety (90) days in
          advance of such change. Agent shall in turn establish the selling
          prices of the industrial mineral coined "Superfil" "Polymer Grade"
          Sales will be based on US dollars. Agent will be solely responsible
          for invoicing which will be under it's registered trade name.

3.        ORDERS AND COLLECTIONS:

          Orders for shipped products solicited by the Agency shall be the full
          responsibility of the Agent. All invoices in connection with orders to
          the Territory shall be rendered by the Principal direct to the Agent
          and full responsibility for all collections and bad debts rests with
          the Agent. The Principal agrees to refer to the Agency for attention
          all inquiries concerning the Principal's product received by any of
          Agents clients or from any other source or by any means whatsoever
          from the Territory or for shipment of products into the territory.
<PAGE>   2
          DUTIES:

          The Purpose of this Agreement is to promote orders and reorder of
          Principal's products and services in the Territory and the long term
          goodwill of the Agency. The Agency agrees to diligently and faithfully
          work the Territory in an endeavour to secure business for the
          Principal and use its best efforts to promote Principal's products.
          Principal will provide product training to Agency staff and use its
          best efforts to perform and provide its products in a fit,
          merchantable, workmanlike and marketable manner, provide marketing
          support for the sales effort of the Agency and protect and promote
          Agency-customer relationships within the territory.

5.        RELATIONSHIP CREATED:

          The Agency is not an employee of the Principal for any purpose
          whatsoever, but is an independent contractor. Principal is interested
          only in the results obtained by the "Agency", who shall have sole
          control of the manner and means of performing under this Agreement.
          Principal shall not have the right to require Agency to do anything
          which would jeopardize the relationship of independent contractor
          between Principal and Agency, unless otherwise agreed in writing.
          Agency shall be responsible for Agency's taxes. All expenses and
          disbursements incurred by Agency in connection with performance by
          Agency or Agency's sales activities shall be borne wholly and
          completely by Agency. Agency does not have, nor shall Agency hold
          itself out as having any right, power or authority to create any
          contract or obligation, express or implied, on behalf of, in the name
          of, or binding on the Principal unless Principal shall consent thereto
          in writing, excepting to solicit orders as the same are more
          particularly defined in this Agreement. Agency shall have the right to
          appoint and shall be solely responsible for Agency's own sub-agents,
          salespersons, employees, agents and representatives who shall be at
          Agency's own risk, expense and supervision and shall not have any
          claim against the Principal for compensation or reimbursement unless
          otherwise agreed to in writing between the parties. Principal shall
          not during the term of this Agreement or for one year after
          termination thereof engage, hire or employ Agency's sub-agents,
          salesperson, employees, representatives or agents unless otherwise
          agreed to be Agency. Neither party shall at any time make
          representations which are outside the scope of this agreement, unless
          agreed to in writing by both parties. On termination of the Agency's
          right to solicit orders for new business for the Principal, the Agency
          shall promptly return to the Principal all promotional material, order
          forms and supplies provided by the Principal to the Agency prior to
          termination.

6.        COMMISSION:

          The Agency's commission rate is 15% of the net product sold, excluding
          transportation costs. Five percent (5%) of commission will be held
          back by the company to purchase stock options at a discount not to
          exceed 25% of the current market value. In addition the agent shall
          receive as bonus company stock options at a discount again not to
          exceed 25% of the market value. Amount of stock options are to be
          determined based on the volume of superfil sold over an established
          time period agreeable to both parties in Section 8.

6.1.      Commissions are earned by the Agency on all "accepted orders"
          solicited within and/or delivered to the Territory, whether the orders
          are sent in by the Agency, received by the Principal by the mails,
          taken at the Principal's place of business, or otherwise. The
          Principal has the option of accepting or rejecting any order solicited
          within the Territory or any order for delivery to the Territory,
          except that an order will be considered an accepted order for the
          purpose of commissions, unless the Principal does not ship and
          notifies the Agency in writing of the order or orders rejected by the
          Principal within thirty (30) days of the submission of the order to
          the Principal whether submitted by the Agency, a customer or through
          some other source. If the order is submitted by mail, the order will
          be considered accepted, unless the Principal does not ship and
          notifies the Agency in writing of the Principal's rejection of the
          order within thirty (30) days of the mailing of such order by the
          Agency or otherwise to the Principal. All commissions payable to the
          Agency hereunder shall be due and payable to the Agency on or before
          the twentieth (20th) day of the month immediately following invoicing.
          In the event of termination of this Agreement by either party, the
          Agency shall be paid commissions on all orders for orders deliveries
          to the Territory which are substantially
<PAGE>   3
                                      -3-

       attributable in whole or in part to activities or services performed
       prior to the effective date of termination, regardless of the shipment
       and invoice date, except in the event of a "for cause termination" under
       Paragraph 7.1 in which event Commission obligation is limited to
       shipments made by Principal prior to the effective date of termination.

       Purchasing Price:

       The principal will sell his product to the marketer for .13c a pound US
       until 12/31/2001. Delivery locations, packaging and labeling will be
       established by marketer. Shipments to customers will be made according to
       industry standards by principal.

8.     Terms:

       This Agreement shall continue in force and effect for one (2) year period
       and thereafter from year to year based upon the Agent selling no less
       than one thousand tons of Superfil per annum and thereafter. This
       agreement will not exceed twenty-one (21) years unless renewed thereafter
       in writing by the parties) unless the first to occur of the following
       events, at which time the Agency's right to solicit new business shall
       terminate:

9.     Product & Product Availability:

       Agent shall have first call on and first right of refusal on inventories.
       All product samples shall be provided by the Principal at no cost to the
       Agent. Specifications for the said product shall be in accordance with
       industry and governmental standards and specifications. Should any
       specification changes be required by Marketer, principal will do
       everything possible to effectively meet said changes at the lowest
       possible cost increment.

10.    For Cause Termination:

10.1   Commission of a felony by either party in the course of performance of
       the Agreement shall entitle the other to effect immediate termination
       upon the giving of written notice.

10.2   The election of one party (the "aggrieved party") to terminate this
       Agreement upon (1) the actual breach or actual default by the other party
       in the reasonable performance of the defaulting party's obligations and
       duties under this Agreement and (2) the failure of the defaulting party
       to cure the same within 30 days (the "cure period") after receipt by the
       defaulting party of a good faith written notice from the aggrieved party
       specifying such breach or default and (3) provided that the defaulting
       party has not cured the default and the aggrieved party may then give
       written notice to defaulting party of his or its election to terminate
       ten (10) days after expiration of the cure period.

11.    General Provisions:

11.1   This Agreement may be modified or amended in whole or in part from time
to time only by the mutual written agreement signed by all parties and
delivered by each to the other prior to the effective date of such modification
or amendment. Principal shall save Agency harmless from and against and
indemnify Agency for all liability, loss, costs, expense or damages whatsoever
caused by reason of any of Principal's products (whether or not defective or
covered by warranty) and any act or commission of Principal or Principal's
customers or vendees, including but not limited to any injury (whether to body,
property of personal or business character or reputation) sustained by any
person or organization or to any person or to property whether from breach of
warranty, products liability, infringement or any patent rights or other rights
of third parties and whether from any violation of municipal, state or federal
laws or regulations governing the products or services or their sale which may
result from the sale or distribution of the products by the Agency, and
including any act by the Agency related to the design, alteration,

<PAGE>   4
                                      -4-

      modification or change of the product supplied by the Principal, except as
      to modification or change caused by or assumed in writing by Agency.
      Principal agrees to include Agency as an insured in all policies of
      Principal which provide protection or indemnity against any liability to
      customers, consumers or third parties as to any liability or
      responsibility above referred to. All provisions of this Agency Agreement,
      including the provisions of this Paragraph 8 shall be subject to and shall
      be enforced and construed pursuant to the laws of the Country where the
      Agency's principal office is located, as set forth below.

11.2  If and in the event any provision of this Agreement is void or voidable
      under any applicable local or state law, such void or voidable provision
      shall not affect the balance of the Agreement which shall remain fully
      enforceable as if said void or voidable provision had been deleted by
      mutual consent of the parties.

12.   NOTICES:

      Any notice, demand or request required or permitted to be given hereunder
      shall be in writing and shall be deemed effective twenty-four (24) hours
      after having been deposited in the mail, postage prepaid, registered are
      certified and addressed to the addressee at its main office, as set forth
      below. Any party may change its address for purposes of this Agreement by
      written notice given in accordance herewith.

      DATE: September 29, 1999
            ------------------

      PRINCIPAL:                          AGENCY: [HEDMAN RESOURCES LIMITED -
                ------------------------           CANADA SEAL]
                                                  -----------------------------

      BY: /s/ Claude Taillefer            BY: /s/ Vincent E. Arlando
          ------------------------------      ---------------------------------

      TITLE: President & CEO              TITLE: President
             ---------------------------         ------------------------------

      ADDRESS OF PRINCIPAL'S MAIN OFFICE:      ADDRESS OF AGENCY'S FIELD OFFICE:

      106 Fielding Road                        61 Harbour Court, Staten Island
      Lively, Ontario                          New York, 10308
      P3Y 1L5<PAGE>   1
                                                                    Exhibit 10.7
                             SALES AGENCY AGREEMENT

THIS AGREEMENT is made as of the 22 day of September, 1997, by and

BETWEEN HEDMAN RESOURCES LIMITED, (Principal)

AND Alliance Financial, Ltd., 4133 Whitney Avenue, Hamden, CT, USA 06518
("AGENCY"). (Hereinafter referred to as the Agency)

WHEREAS, THE PARTIES HAVE MUTUALLY AGREED TO ENTER INTO AN EXCLUSIVE SALES
AGENCY AGREEMENT FOR THE DISTRIBUTION OF ENVIROFIL.

NOW THEREFORE, in consideration of the parties, it is agreed:

1.   EXCLUSIVE REPRESENTATION: Principal grants to Agency the exclusive right to
     act as Principal's sales representative, to solicit orders for the
     Principal's sole ("product or future products") within the following
     geographical area.

     As outlined in Appendix one (1).

2.   SALES POLICIES: The prices, charges and terms of sale of the products
     ("Sales Policies") shall be established by the Principal. The Sales
     Policies shall be those currently in effect and established from time to
     time by the Principal in its price books, bulletins, and other authorized
     releases. Written notice of each Sales Policy change shall be given by the
     Principal to the Agency at least ninety (90) days in advance of such
     change.

3.   ORDERS AND COLLECTIONS: Orders for products solicited by the Agency shall
     be forwarded to and subject To acceptance by the Principal. All invoices in
     connection with orders to the Territory shall be rendered by the Principal
     direct to the customers, and full responsibility for all collections and
     bad debts rests with the Principal. The Principal agrees to refer to the
     Agency for attention all inquiries concerning the Principal's products
     received by the Principal from any source or by any means whatsoever from
     the Territory or for shipment of products into the territory. The Principal
     agrees to promptly furnish the Agency with copies of all correspondence and
     documentation between the Company and any customer covering any Envirofil
     orders from within or for shipment into the Territory or sold to a customer
     within the Territory and to furnish the Agency with statement on the
     twentieth (20th) day of each month covering the amount of orders and the
     amount of invoices for the previous month and the amount of commission due
     the Agency.

4.   DUTIES: The Purpose of this Agreement is to promote orders and reorders of
     Principal's products and services in the Territory and the long term
     goodwill of the Agency. The Agency agrees to diligently and faithfully work
     the Territory in an endeavour to secure business for the Principal and use
     its best efforts to promote Principal's products. Principal will provide
     product training to Agency staff and use its best efforts to perform and
     provide its products in a fit, merchantable, workmanlike and marketable
     manner, provide marketing support for the sales effort of the Agency and
     protect and promote Agency-customer relationships within the territory.

<PAGE>   2
5.   RELATIONSHIP CREATED: The Agency is not an employee of the Principal for
     any purpose whatsoever, but is an independent contractor. Principal is
     interested only in the results obtained by the "Agency, who shall have
     sole control of the manner and means of performing under this Agreement.
     Principal shall not have the right to require Agency To do anything which
     would jeopardize the relationship of independent contractor between
     Principal and Agency, unless otherwise agreed in writing. Agency shall be
     responsible for Agency's taxes. All expenses and disbursements incurred
     by Agency in connection with performance by Agency or Agency's sales
     activities shall be borne wholly and completely by Agency. Agency does not
     have, nor shall Agency hold itself out as having any right, power or
     authority to create any contract or obligation, express or implied, on
     behalf of, in the name of, or binding on the Principal unless Principal
     shall consent thereto in writing, excepting to solicit orders as the same
     are more particularly defined in this Agreement. Agency shall have the
     right to appoint and shall be solely responsible for Agency's own
     sub-agents, salespersons, employees, agents and representatives who shall
     be at Agency's own risk, expense and supervision and shall not have any
     claim against the Principal for compensation or reimbursement unless
     otherwise agreed to in writing between the parties. Principal shall not
     during the term of this Agreement or for one year after termination
     thereof engage, hire or employ Agency's sub-agents, salesperson,
     employees, representatives or agents unless otherwise agreed to be Agency.
     On termination of the Agency's right To solicit orders for new business
     for the Principal, the Agency shall promptly return to the Principal all
     promotional material, order forms and supplies provided by the Principal
     to the Agency prior to termination.

6.   COMMISSION: The Agency's commission rate is 9% of the next product sold,
     excluding transportation costs.

6.1. Commissions are earned by the Agency on all accepted orders solicited
     within and/or delivered to the Territory, whether the orders are sent in
     by the Agency, received by the Principal by the mails, taken at the
     Principal's place of business, or otherwise. The Principal has the option
     of accepting or rejecting any order solicited within the Territory or any
     order for delivery to the Territory, except that an order will be
     considered an accepted order for the purpose of commissions, unless the
     Principal does not ship or invoice and notifies the Agency in writing of
     the order or orders rejected by the Principal within thirty (30) days of
     the submission of the order to the Principal whether submitted by the
     Agency, a customer or through some other source. If the order is submitted
     by mail, the order will be considered accepted, unless the Principal does
     not ship or invoice and notifies the Agency in writing of the Principal's
     rejection of the order within thirty (30) days of the mailing of such
     order by the Agency or the customer or otherwise to the Principal.
     Principal shall be entitled to charge back against Agency's commission a
     sum equal to the commission paid on orders on which the Principal has
     shipped the product, the customer has returned the product and the
     Principal has given the customer full refund or credit for the purchase
     price on such returned product. Commissions payable To the Agency shall be
     computed on the net amount of each invoice rendered for each order or part
     of an order on shipment, exclusive of freight and transportation costs,
     including insurance, normal and recurring bona fide trade discounts and
     any applicable sales or similar taxes. The Agency shall not be charged with
     or liable for advertising allowances nor any decrease or reduction of
     commission based upon volume or other discounts unless mutually agreed in
     writing by all parties prior to acceptance of the order. All commissions
     payable To the Agency hereunder shall be due and payable to the Agency on
     or before the twentieth (20th) day of the month immediately following
     invoicing. In the event of termination of this Agreement by either party,
     the Agency shall be paid commissions on all orders from orders deliveries
     To the Territory which are substantially attributable in whole or in part
     to activities or services performed prior to the effective date of
     termination, regardless of the shipment and invoice date, except in the
     event of a for cause termination under Paragraph 7.1 in which event
     Commission obligation is limited to shipments made by Principal prior to
     the effective date of termination.

6.2  Principal in Principal's sole discretion has the right to split Commissions
     on Orders: obtained solely outside the Territory and in the exclusive
     Territory of another Sales Agency to whom Principal pays Commission on the
     Order; deliveries outside the "Territory" to the exclusive Territory of
     another Sales Agency to whom Principal pays Commission on the delivery to
     the extent that Principal pays Commission To the other Sales Agency; but
     in no event shall the Commission payable to Agency herein be reduced by
     reason of the split To less than fifty percent (50%) of the amount Agency
     earns pursuant To Paragraph 6.1 of this Agreement.
<PAGE>   3
7.  Terms:

        This agreement shall continue in force and effect for one (1) year and
        thereafter from year to year based upon the Agent selling no less than
        two thousand tons of Envirofil per year. This agreement will not exceed
        twenty-one (21) years unless renewed thereafter in writing by the
        parties unless the first to occur of the following events at which time
        the Agencies right to solicit new business shall terminate.

7.1  For Cause Termination:

7.1.1   Commission of a felony by either party in the course of performance of
        the Agreement shall entitle the other to effect immediate termination
        upon the giving of written notice.

7.1.2   The election of one party (the "aggrieved party") to terminate this
        Agreement upon (1) the actual breach or actual default by the other
        party in the reasonable performance of the defaulting party's
        obligations and duties under this Agreement and (2) the failure of the
        defaulting party to cure the same within 15 days (the "cure period")
        after receipt by the defaulting party of a good faith written notice
        from the aggrieved party specifying such breach or default and (3)
        provided that the defaulting party has not cured the default and the
        aggrieved party may then give written notice To defaulting party of his
        or its election To terminate ten (10) days after expiration of the cure
        period.

7.2  Without Cause Termination:

7.2.1   After the first year, on expiration of any one year term, provided
        written notice of election to terminate is given in writing to the other
        party sixty (60) days before the expiration of the existing term.

7.2.2   After the first full year, either party retains the right to terminate
        at any time after one-hundred twenty (120) days written notice to the
        other party of election to terminate.

8. General Provisions:

8.1     This agreement may be modified or amended in whole or in part from time
        to time only by the mutual written agreement signed by all parties and
        delivered by each to the other prior to the effective date of such
        modification or amendment. Principal shall save Agency harmless from and
        against and indemnify Agency for all liability, loss, costs, expense or
        damages whatsoever caused by reason of any of the Principals products
        (whether or not defective or covered by warranty) and any act or
        commission of Principal or Principals customers or vendees, including
        but not limited to any injury (whether to body, property of personal or
        business character or reputation) sustained by any person or
        organization or to any person or to property whether from breach of
        warranty, products liability, infringement or any patent rights or other
        rights of third parties and whether from any violation of municipal,
        state or federal laws or regulations governing the products or services
        or their sale which may result from the sale or distribution of the
        products by the Agency, and including any act by the Agency related to
        the design, alteration, modification or change of the product supplied
        by the Principal, except as to modification or change caused by or
        assumed in writing by Agency. Principal agrees to include Agency as an
        insured in all policies of Principal which provide protection or
        indemnity against any liability to customers, consumers or third parties
        as to any liability or responsibility above referred to. All provisions
        of this Agency Agreement, including the provisions of this Paragraph 8,
        shall be subject to and shall be enforced and construed pursuant to the
        laws of the State (Agencies State) where the Agencies principal office
        is located, as set forth below. Principal hereby appoints as its agent
        for service of process in connection with any action brought by Agency
        against Principal hereunder the Secretary of State of Agencies state of
        residence at the time such action is brought. In the event of
        litigation, prevailing party shall be entitled to recover interest as
        may be provided by law. Court costs and reasonable attorneys fees.

        If and in event any provision of this agreement is void or voidable
        under any applicable local or state law, such void or voidable provision
        shall not affect the balance of the Agreement which shall remain fully
        enforceable as if void or voidable provision had been deleted by mutual
        consent of the parties.
<PAGE>   4
9.   NOTICES:

          Any notice, demand or request required or permitted to be given
hereunder shall be in writing and shall be deemed effective twenty-four (24)
hours after having been deposited in the United States mail, postage prepaid,
registered or certified and addressed to the addressee at its main office, as
set forth below. Any party may change its address for purposes of this
Agreement by written notice given in accordance herewith.

DATE: Sept. 22/99

DIRECTOR: X                             AGENCY: Alliance Financial Ltd.
         ---------------------------           ----------------------------

By: /s/ Claude Taillefer                   By: /s/ John M. Scalesse
    --------------------------------           ----------------------------

Title: President & CEO                     Title: President
       -----------------------------              -------------------------

Address of Principal's Main Office:     Address of Agency's Main Office:

Hedman Resources Limited                4133 Whitney Avenue, Building 2,
106 Fielding Road,                      Hamden, Connecticut, USA
Lively, Ontario, Canada                 06518
P3Y 1L5
<PAGE>   5
                           ALLIANCE FINANCIAL LIMITED

                                  APPENDIX "A"

COMPANY NAME                            LOCATION
------------                            --------

UNIVERSAL FRICTION                      MANHEIM, PA

RAYBESTOS                               CRAWFORDSVILLE, INDIANA

PM AUTOMOTIVE                           BATAVIA, ILLINOIS

AC MOLDING                              WALLINGFORD, CT

BRAKE PARTS INC.                        HAMDEN, CT

FRICTION PRODUCTS                       MEDINA, OHIO

WHEELING BRAKE                          BRIDGEPORT, OHIO

HIBBING INTERNATIONAL                   NEW CASTLE, INDIANA

HYDRAMECHANICAL                         STERLING HEIGHTS, MICHIGAN

PLASTLOCK INC                           BUFFALO, NY

PMC INC                                 DALLAS, TEXAS

SAVEREISEN INC                          PITTSBURGH, PA

GENERAL ELECTRIC                        FAIRFIELD, CT

UNION CARBIDE                           DANBURY, CT

AMERICAN REFRACTORIES                   NORTH HAVEN, CT

AREMCO                                  OSSINING, NY

TRIMITE POWDERS                         SPARTANSBURG, SC

FARBOR POWDER COATINGS                  BALTIMORE, MD

BENDIX/ALLIED SIGNAL                    SOUTHFIELD, MICHIGAN

ECHLIN MFG                              BRANFORD, CT

ABELSON & ASSOCIATES                    WASHINGTON, DC

HIGHWAY REHAB CORP                      BREWSTER, NY

The above accounts have been approved for Alliance Financial, Limited.

/s/ Claude Taillefer                    /s/ John M. Scalesse
-----------------------------------     -----------------------------------
Claude Taillefer                        John M. Scalesse
President and CEO                       President
Hedman Resources Limited                Alliance Financial Limited

<PAGE>   6
                           ALLIANCE FINANCIAL LIMITED

                                  APPENDIX "B"

COMPANY NAME                            LOCATION
------------                            --------
HONEYWELL/ALLIED SIGNAL                 SOUTHFIELD, MICHIGAN
ECHLIN MFG                              BRANFORD, CT.
RAYTECH                                 SHELTON, CT.

The above accounts have been approved for Alliance Financial, Limited

/s/ Claude Taillefer                    /s/ John M. Scalesse
-------------------------------------   ----------------------------------------
Claude Taillefer                        John M. Scalesse
President and CEO                       President
Hedman Resources Limited                Alliance Financial, Limited
<PAGE>   7
Per our discussion, I have created an APPENDIX "B" for those accounts which
will be paid at 10% commission and changed the commission paragraph to reflect
this.

          6. COMMISSION: APPENDIX 'A' -- The Agency's commission rate is 9% of
          the next product sold, excluding transportation costs.

          APPENDIX 'B' -- The Agency's commission rate is 10% of the next
          product sold, excluding transportation costs.

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