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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EXHIBIT 10.12 ENDORSEMENT AGREEMENT This Endorsement Agreement is made and entered into this first (1st) day of January, 1996, by and between Teardrop Putter Corporation having its principal office at 207 WatersEdge, Shelter Cove, Hilton Head Island, South Carolina 29928 (hereinafter referred to as "TPC"), and Consolidated Artists Inc., Sommerville House, Phillips Street, St. Helier, Jersey JE1 1DE, Channel Islands, British Isles (hereinafter referred to as "Consolidated Artists"). WITNESSETH: WHEREAS, Brett Ogle (hereinafter referred to as "Ogle") is recognized and widely known throughout the world as an expert golfer; and WHEREAS, Ogle's name, by virtue of his ability and extensive experience, has acquired a secondary meaning in the mind of the purchasing public important to the advertisement, promotion and sale of golf putters; and WHEREAS, TPC is engaged in the manufacture, distribution and sale of golf putters, and is desirous of acquiring the exclusive right to utilize Ogle's name in connection with the advertisement, promotion and sale of the Teardrop Putter; and WHEREAS, Consolidated Artists holds all rights to and in Ogle's name and endorsement for purposes of this Agreement; and WHEREAS, Consolidated Artists being exclusively entitled to such rights within the Contract Territory (as hereinafter defined) - 2 - has agreed to authorize such use upon the terms and conditions hereinafter contained; NOW, THEREFORE, for and in consideration of the premises and mutual covenants herein set forth and for other good and valuable consideration, it is agreed as follows: 1. DEFINITIONS: As used herein, the terms set forth below shall be defined as follows: (a) "Ogle Endorsement" shall mean the name, likeness, photograph, and endorsement of Ogle. (b) "Endorsed Product" shall mean a putter manufactured, distributed, promoted, advertised and sold by TPC bearing the "Teardrop Putter" name and/or logo. (c) "Contract Territory" shall mean the entire world. (d) "Contract Period" shall mean that period of time commencing January 1, 1996, and concluding December 31, 1998, unless sooner terminated in accordance with the terms and conditions hereof. (e) "Contract Year" shall mean that twelve (12)month period of time commencing each first (1st) day of January throughout the Contract Period. (f) "Major Tournament" shall mean any of the following tournaments: the Masters, the U.S. Open, the British Open and the PGA Championship. - 3 - (g) "PGA Tour Tournament" shall mean PGA Tour tournaments, excluding the Major Tournaments. (h) "International Tournament" shall mean European PGA Tour tournaments (excluding the British Open),Japan PGA Tour tournaments and Australian PGA Tour tournaments. 2. OGLE TO USE ENDORSED PRODUCT. Consolidated Artists agrees to cause Ogle to use the Endorsed Product during the Contract Period and throughout the Contract Territory whenever he is playing competitive golf or otherwise participating in golf clinics and outings. 3. GRANT OF ENDORSEMENT RIGHTS. Subject to the terms and conditions set forth herein, Consolidated Artists grants to TPC the exclusive right and license, within the Contract Territory and during the Contract Period, to use the Ogle Endorsement in connection with the manufacture, distribution, advertisement, promotion and sale of the Endorsed Product. 4. CLOTHING IDENTIFICATION. Consolidated Artists agrees to cause Ogle to wear a patch and/or an embroidered non-patch bearing the Teardrop name and/or logo on the right chest, left sleeve, and back of his golf shirt and/or sweater (near the collar) and/or rain gear whenever he is playing competitive golf, participating in golf clinics and outings or otherwise engaging in golf promotional activities during the Contract Period and throughout the Contract Territory. The expenses for the clothing and placement of the - 4 - patch and/or embroidered non-patch shall be borne by TPC. TPC agrees to supply Consolidated Artists or its designee with adequate quantities of said patch and embroidered non-patch at no charge to Consolidated Artists. 5. RETENTION OF ENDORSEMENT RIGHTS. Subject to the provisions of Paragraphs 2, 3 and 4 above, TPC agrees that Consolidated Artists shall retain all rights in and to the Ogle Endorsement and shall not be prevented from using or permitting or licensing others to use his name or endorsement in connection with the promotion, advertisement, or sale of any product or service other than a golf putter in the Contract Territory during the Contract Period. TPC further agrees that upon the termination of this Endorsement Agreement for any cause whatsoever, it will cease using the Ogle Endorsement, the name "Brett Ogle," or any facsimile thereof, for any promotional or advertising purposes; provided, however, that TPC shall have the right to use the Ogle Endorsement in advertisements for ad space purchased by TPC prior to
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Extract the exact clause related to "Covenant Not To Sue" from the excerpt above.