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:
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unless TDA is not in default of any of its obligations hereunder as of the date of expiration or termination. 7. REPRESENTATIONS, WARRANTIES AND COVENANTS 7.1 Representations and Warranties. (a) Smith represents and warrants that: (i) Smith has full right to enter into this Agreement and to perform all of his obligations hereunder without, to his knowledge, violating the legal or equitable rights of any person, firm or entity and that TDA shall not be under any obligation for the payment of any 3 commissions or fees to any person, firm or entity on account of this Agreement, other than advances, compensation, royalties and expenses expressly payable to Smith by TDA under this Agreement; (ii) Smith will perform the Services in a professional and workmanlike manner, to the extent of Smith's professional abilities. (b) TDA represents and warrants that: (i) TDA has full right to enter into this Agreement and to perform all of its obligations hereunder without, to its knowledge, violating the legal or equitable rights of any person, firm or entity and that Smith shall not be under any obligation for the payment of any commissions or fees to any person, firm or entity related to or connected with TDA on account of this Agreement. (c) Notwithstanding anything herein to the contrary, TDA agrees that nothing contained herein shall be construed to convey to TDA any rights to use the trademarks, logos or uniform of the PGA TOUR ("PGA"), any other professional or amateur golf instruction related association (including any member players of such association) in conjunction with the rights granted hereunder. All rights to the use of such trademarks, logos or team identification must be acquired from the PGA or any other appropriate rights holder. 7.2 Further Assurances and Execution of Documents. Smith will, if requested and reasonable, furnish affidavits and other appropriate documentation that may be required, in TDA's reasonable judgment and at TDA's expense, to comply with any applicable governmental or other regulations, broadcast clearance procedures, or sports/entertainment industry guidelines relating to product endorsement. Furthermore, Smith hereby agrees to execute any and all documents which are required by any guild or union having jurisdiction over any of the services to be provided by Smith under this Agreement. 7.3 Confidential Information and Non-Disparagement. Neither party will disclose or use any confidential or proprietary information that such party obtains from or about the other or its products. Both parties agree that the existence and results of any arbitration held pursuant to this Agreement will be treated confidentially. Smith will not authorize or release advertising matter or publicity nor give interviews which make reference to the details of the material terms of this Agreement, without TDA's prior written approval, although Smith may, during interviews, respond, discuss and comment in a non-disparaging manner that Smith is associated with TDA and its Golf Instruction Related Products. 8. OWNERSHIP OF PROPRIETARY RIGHTS 8.1 All right, title and interest in and to TDA's Golf Instruction Related Products shall be and remain the absolute property of TDA forever (it being understood that after the Term TDA may continue to manufacture, promote, sell and/or distribute its other golf instruction related interactive entertainment sports products which are separate and distinct from the Golf Instruction Related Products incorporating Smith's Likeness on the packaging without being subject to any of the limitations or restriction herein, provided that the Rights are not (directly or indirectly) utilized by or incorporated in such other golf instruction related interactive sports products. All right, title and interest in and to the Results and Proceeds and to the Advertising Materials (as defined below) shall be and remain the absolute property of TDA forever (but which may only be used during the Term and, subject to the limitations and conditions set forth in this Agreement, thereafter). Without limiting the foregoing, TDA shall, during the Term (and, Subject to the limitations and conditions on the Rights as set forth in this Agreement, thereafter) have the full and complete right to revise, telecast, broadcast, use, distribute, reproduce, record, publish, print, license, copyright and exhibit the contents of any Results and Proceeds, the Golf Instruction Related Products and any Advertising Materials and any versions or revisions thereof and, in TDA's sole discretion, the Results and Proceeds, the Golf Instruction Related Products and Advertising Materials may be make by any process, instrumentation or device now known or hereafter developed and may be made or adapted for use in any and all media now known or hereafter developed (although
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Extract the exact clause related to "Effective Date" from the excerpt above.