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:
"""
[***]. 30 Source: AIMMUNE THERAPEUTICS, INC., 8-K, 2/5/2020 9.6 Patent Marking. Aimmune shall mark the Product marketed and sold by Aimmune (or the other Aimmune Agreement Entities) hereunder with appropriate patent numbers or indicia. 9.7 Patent Challenge. Xencor will be permitted to terminate this Agreement upon written notice to Aimmune, effective [***] ([***]) days after receipt of written notice thereof by Aimmune, if Aimmune or any of the other Aimmune Agreement Entities, directly or indirectly, (i) [***], or (ii) [***]. ARTICLE 10 REPRESENTATIONS, WARRANTIES AND COVENANTS; COMPLIANCE 10.1 Mutual Representations and Warranties. Each Party hereby represents and warrants to the other Party as follows, as of the Effective Date: 10.1.1 Corporate Existence and Power. It is a company or corporation duly organized, validly existing, and in good standing under the laws of the jurisdiction in which it is incorporated, and has full corporate power and authority and the legal right to own and operate its property and assets and to carry on its business as it is now being conducted and as contemplated in this Agreement, including the right to grant the licenses granted by it hereunder. 10.1.2 Authority and Binding Agreement. (i) It has the corporate power and authority and the legal right to enter into this Agreement and perform its obligations hereunder, (ii) it has taken all necessary corporate action on its part required to authorize the execution and delivery of this Agreement and the performance of its obligations hereunder, and (iii) this Agreement has been duly executed and delivered on behalf of such Party, and constitutes a legal, valid, and binding obligation of such Party that is enforceable against it in accordance with its terms, except as enforcement may be affected by bankruptcy, insolvency or other similar laws and by general principles of equity. 10.1.3 No Conflicts. The execution, delivery and performance of this Agreement by it does not (i) conflict with any agreement, instrument or understanding, oral or written, to which it is a party and by which it may be bound or (ii) violate any Applicable Law. 10.1.4 All Consents and Approvals Obtained. Except with respect to Regulatory Approvals for the Development, Manufacturing or Commercialization of the Product or as otherwise described in this Agreement, (i) all necessary consents, approvals and authorizations of, and (ii) all notices to, and filings by such Party with, all Governmental Authorities and other Persons required to be obtained or provided by such Party as of the Effective Date in connection with the execution, delivery and performance of this Agreement have been obtained and provided, except for those approvals, if any, not required at the time of execution of this Agreement. 31 Source: AIMMUNE THERAPEUTICS, INC., 8-K, 2/5/2020 10.2 Additional Representations, Warranties and Covenants of Xencor. Xencor hereby represents, warrants and covenants to Aimmune that, as of the Effective Date: 10.2.1 Xencor has not filed any Marketing Authorization Applications with a Governmental Authority for the sale of the Product. 10.2.2 Xencor is the sole owner or licensee of the Xencor Patents existing as of the Effective Date. 10.2.3 There is no Know-How that is owned by or licensed to Xencor that is necessary in connection with the Development, Manufacture, Commercialization or other use of the Antibody or Product that is not in the Control of Xencor as the Antibody and Product exist, and as being Developed and Manufactured, as of the Effective Date. 10.2.4 Schedule 1.79 and Schedule 1.81, when taken together, set forth a true, complete and correct list of all Patents Controlled by Xencor or its Affiliates as of the Effective Date that relate to the Antibody or Product and are necessary for Developing, Manufacturing or Commercializing the Antibody or Product. 10.2.5 To Xencor's knowledge, Xencor has complied with all Applicable Laws in all material respects, including any disclosure requirements, in connection with the filing, prosecution and maintenance of the Xencor Patents owned by Xencor. 10.2.6 Other than as set forth in Schedule 10.2.6, [***] the issued Patents within the Xencor Patents are neither invalid nor unenforceable. 10.2.7 No claim or demand of any Person has been asserted in writing to Xencor or its Affiliates, or to Xencor's knowledge, its licensees or sublicensees that challenges the rights of Xencor, its Affiliates, licensees or sublicensees to make, use, sell, exploit or license the Antibody or Product or to practice the Xencor Technology. 10.2.8 Neither Xencor nor, to the knowledge of Xencor, its Affiliates, licensees, sublicensees or subcontractors have received written notice of any proceedings pending before or threatened by
"""

Extract the exact clause related to "Minimum Commitment" from the excerpt above.

assistant: Not found.