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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extent that such Works were created by Contractor for Company over a time period for which Company has been invoiced and said invoice has been paid. Contractor agrees to render, at Company's sole cost Page 4 of 10 and expense, all reasonably required assistance to Company to protect the rights herein above described, including executing other documents as requested by Company. (b) Company acknowledges that Contractor provides consulting and development services to other clients, and agrees that nothing in this Agreement shall be deemed or construed to prevent Contractor from delivering on such business. In particular, Company agrees that, notwithstanding anything to the contrary set forth herein: (i) as part of Contractor's provision of the Services hereunder, Contractor may utilize its own proprietary works of authorship, that have not been created specifically for Company, including without limitation software, methodologies, tools, specifications, drawings, sketches, models, samples, records and documentation, as well as copyrights, trademarks, servicemarks, ideas, concepts, know-how, techniques, knowledge or data, which have been originated, developed or purchased by Contractor or by third parties under contract to Contractor, and, (ii) Contractor's Information and Contractor's administrative communications and records relating to the Services shall not be deemed to be Works and are and shall remain the sole and exclusive property of Contractor and Company shall not resell or make use of said property in any other manner other than in connection with the software Company receives under this Agreement. (c) To the extent that Contractor incorporates any of Contractor's Information into the Works, Contractor hereby grants to Company a royalty-free, non- exclusive perpetual license (including the right to grant a sublicense) to use, copy, modify, create, derivative version, publicly perform and publicly display such Contractor's Information in connection with Company's business operations. (d) Consultant agrees that after Company pays Contractor in full, or after the termination of this agreement, Company may make any changes or additions to the software Consultant created for Company under this Agreement, which Company in Company's discretion may consider necessary, and Company may engage others to make any such changes or additions, without further payments to Consultant. 5. CONTRACTOR'S REPRESENTATIONS AND WARRANTIES AND WARRANTY DISCLAIMER. (a) Contractor represents and warrants to Company that Contractor's performance of the Services called for by this Agreement, to its knowledge, does not and shall not violate any applicable law, rule, or regulation; Page 5 of 10 (b) Contractor represents and warrants to Company that Contractor has full authority and sufficient rights, except for rights respecting programs, data and materials provided by Company or identified by Contractor as furnished to Company by third-party vendors, to grant and convey the rights granted to Company under Paragraph 4 hereof; (c) Contractor represents and warrants that the Works provided hereunder, including any Contractor Information and any third party products do not infringe any trade secret, trademark, copyright, patent or other proprietary right of any other third party. (d) Contractor covenants that it will not offer or pay any bribes (including any offer to provide improper gifts or entertainment) to secure or retain a business advantage (for the benefit of Contractor or for the benefit of Company) at any time during the term of this agreement. Specifically, Contractor agrees that it will not offer or pay any bribes to any person (including, in particular, to any government official) in connection with any aspect of the performance of services under this agreement. Contractor also covenants that at all times during the term of this agreement that it will maintain internal policies and procedures that are reasonably designed to ensure that Contractor's employees and representatives will not offer to pay or pay bribes (or offer or provide improper gifts or entertainment) to any person in connection with Contractor's performance under this agreement. Contractor also covenants that it will provide suitable training to its employees and representatives during the term of this agreement about Contractor's anti-corruption policies and procedures. Contractor represents and warrants to Company that Contractor has not offered or paid any bribes (or offered or provided any improper gifts and entertainment) to secure business under this agreement or otherwise in connection with the performance of its obligations under this agreement. Notwithstanding any other provision of this agreement, if Contractor offers or pays a bribe or provides improper gifts or entertainment to any government official or to any other person in connection with the performance of Contractor's obligations under this agreement, Company shall be entitled to elect to terminate this agreement effective immediately upon providing to Contractor written
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Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.