system: You are a contract-analysis assistant performing a span-extraction task. You are given an excerpt from a commercial contract and the name of a clause type to locate within it.

Return the exact text of the requested clause, copied verbatim from the excerpt — identical wording and punctuation, with no paraphrasing, summarising, explanation, or added commentary.

The excerpt is one window of a much longer contract and often will not contain the requested clause. If the requested clause does not appear in this excerpt, respond with exactly: Not found.

Output only the extracted clause text, or the exact string `Not found.` — nothing else.

user: Contract excerpt:
"""
document reasonably requested by Purchaser (collectively, the "New Sponsor Documents") and agrees to be bound hereby as a "Sponsor" hereunder; (c) certifies to each Party that such fund is capable of performing the obligations of such fund under each such New Sponsor Document; and (d) is approved by each non- transferring Participating Sponsor, which approval may not be unreasonably withheld, conditioned, or delayed. 5. Interim Period and Continuing Sponsors. Each Party shall use commercially reasonable efforts to negotiate and enter into at or prior to the Acceptance Time: (a) an amended and restated limited liability company agreement of Purchaser ("Purchaser LLC Agreement"); and (b) one or more definitive agreements with the Participating Sponsors (collectively, "Security Holder Agreements") providing for the unanimous consent of the Continuing Sponsors with respect to all decisions to be made by or on behalf of Purchaser with respect to any Offer Matter or the Company or any security issued or to be issued by the Company during the period on and from the Acceptance Date and until the time there ceases to be at least two Continuing Sponsors ("Interim Period"), including without limitation, any matter described in or contemplated by Section 1 hereof. For purposes hereof, "Continuing Sponsor" shall mean and refer to each Participating Sponsor that becomes a member of Purchaser and a party to the Purchaser LLC Agreement and Security Holder Agreements (collectively, the "Management-Ownership Agreements"), in each case, as long as such Sponsor continues to be a member of Purchaser and comply with the Management-Ownership Agreements. 6. Voting Agreements. Purchaser shall (and each Sponsor shall cause each Unit owned by such Sponsor, if any, to be voted to cause Purchaser to) authorize, issue, sell, or exchange, as applicable, Units to Participating Sponsors pro rata (based on the Commitments of Participating Sponsors) and otherwise in accordance with the Equity Commitment Letters and this Agreement; provided, however, that each Unit of any class or series shall be issued at the same price(s) and in the same proportion(s) as all other Units of such class or series. Tender Offer Statement on Schedule TO - July 16, 2012 Exhibit (d)(i) Sponsorship Agreement - July 16, 2012 7. Distribution, Redemption, and Other Transfer Rights. Notwithstanding anything herein or in any Management-Ownership Agreement to the contrary, each Continuing Sponsor may, at any time or from time to time in such Sponsor's sole discretion, cause Purchaser to distribute or otherwise transfer to such Sponsor all (but not less than all) of the amount of the Shares, if any, then owned by Purchaser equal to such Sponsor's pro rata share thereof (based on the Units then owned by all Sponsors) in redemption of or otherwise in exchange and as consideration for the Units then owned by such Sponsor. 8. Termination Fee. An amount equal to any termination or similar fee received by Purchaser, including, without limitation, any such fee paid by the Company or any affiliate, associate, or related party of the Company pursuant to a merger agreement or otherwise, or portion thereof remaining after making or confirming adequate provisions for the payment or reimbursement of Transaction Costs, shall be promptly distributed or otherwise paid to the Sponsors (other than any Defaulting Sponsor) or their designees, in any case, pro rata (based on the Commitments or Units of such Sponsors, as applicable). 9. Expenses. To the extent Purchaser has available funds, Purchaser shall promptly pay or reimburse, as applicable, all Transaction Costs incurred by or on behalf of Purchaser or the Sponsors in connection with the Offer as follows: (a) first, all such Transaction Costs reasonably incurred by or on behalf of Purchaser, including, without limitation, in connection with the formation or organization of Purchaser; and (b) second, all such Transaction Costs reasonably incurred by or on behalf of the Sponsors in connection with the Offer, which shall be paid or reimbursed pro rata (based on the Commitments or Units of such Sponsors, as applicable). Except as otherwise expressly provided hereby and to the extent Purchaser does not have available funds, each Sponsor shall be responsible for any and all fees, expenses, and other costs incurred by or on behalf of such Sponsor. 10. Disclosures; Legal Compliance. Each Party hereby represents and warrants to, and agrees with, each other Party that: (a) in connection with the Offer and this Agreement, such Party has not made, and shall not make, any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements made,
"""

Extract the exact clause related to "Expiration Date" from the excerpt above.