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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Exhibits), the license to MusclePharm with respect to distribution and promotion of the Licensed Products is on a worldwide basis through the Distribution Channels (as defined below) subject to approval rights set forth in Section 13 herein. For the purposes of this Agreement, "Distribution Channels" means the distribution of the Licensed Products through GNC retail and online chains worldwide during the First Contract Year and, thereafter, through MusclePharm's other worldwide distribution channels, as mutually determined by MusclePharm and the AS Parties. 3. Endorsement of Products: Endorser agrees that he will use and evaluate the Products and Licensed Products according to the recommended use and dose guidelines. Based on Endorser's knowledge, personal use and experience with the Products and Licensed Products that he shall from time to time during the Term of this Agreement provide his honest evaluation, opinion, and findings about the Products and Licensed Products he is endorsing and promoting. The endorsements must be based on Endorser's knowledge and/or personal use and experience with the Products and Licensed Products at or about the times the endorsements are made. Endorser's statements and endorsements, or paraphrases thereof, may be used by MusclePharm to advertise, promote and publicize its business, Products and Licensed Products as provided herein. Endorser's endorsements of the Products and Licensed Products will be in accordance with the guidelines established by the Federal Trade Commission for endorsements in advertising. If requested by MusclePharm, Endorser shall provide a signed affidavit in form satisfactory to MusclePharm confirming Endorser's compliance with the FTC standards in connection with his endorsements and endorsement activities. Source: MUSCLEPHARM CORP, 10-K/A, 2/8/2017 4. Appearances, Advertising and Promotional Activities: (a) Appearances and Video. (i) In order to ensure the success of the co-branded Licensed Products and maximize Net Sales of such Licensed Products to the mutual benefit of the parties hereto, the Endorser agrees that he shall make four (4) personal appearances ("Appearances") in the First Contract Year on dates, times and places mutually agreed upon by the parties hereto. Endorser acknowledges that such Appearances in the First Contract Year shall consist of: (i) one (1) appearance at an industry tradeshow to be mutually agreed by the parties, (ii) one (1) charity event with Arnold's All-Stars, (iii) one (1) appearance at the Arnold Classic, and (iv) one (1) corporate and public relations event(s) in 2013 to be mutually agreed by the parties. (ii) The Endorser and MusclePharm may also agree to produce on dates, times and places mutually agreed upon by the parties hereto a GetSwole training video (the "Training Video") during a production session (the "Production Day"). In the event that Endorser shall agree to produce the Training Video (such decision shall be made by the Endorser exercisable in his sole discretion) and Products (other than the Licensed Products) are featured and sold in connection with such Training Video then Endorser shall receive ten percent (10%) of Net Sales (as defined below) from the sale of any Products other than the Licensed Products featured and sold directly in conjunction with the Training Video. (iii) In order to ensure the success of the co-branded Licensed Products and maximize Net Sales of such Licensed Products to the mutual benefit of the parties hereto, the Endorser agrees that he shall make two (2) Appearances in each of the Second Contract Year and Third Contract Year (and any subsequent Contract Years if applicable) on dates, times and places mutually agreed upon by the parties hereto (one such appearance to include the Arnold Classic in each such Contract Year). (iv) Each Appearance may be up to two (2) hours in length not including travel time to and from the Appearance, as scheduled by MusclePharm, for the purpose or promoting MusclePharm, its Products and the Licensed Products. The Production Day shall be for the purpose of MusclePharm shooting the Training Video. In the event that the Endorser agrees to participate in the Training Video, the Production Day for the Training Video may be up to two (2) hours in duration. (v) In the event Endorser agrees to appear in the Training Video on television promoting the Licensed Products during the Term hereof, the Training Video shall be produced by a production company that is a SAG signatory and such production company shall pay on behalf of the Endorser all pension, health & welfare benefit payments. For the purpose of computing such pension, health and welfare benefit contributions and any other payments under any SAG or AFTRA contracts applicable to Endorser's appearance in such
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Extract the exact clause related to "Change Of Control" from the excerpt above.