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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assist in such actions to the extent required and requested by HSI for establishing use of the HSI (HERTZ) Foreign ERB Trademarks, the HSI HERC Foreign ERB Trademarks and HSI (HERTZ) US ERB Trademarks during the Interim Period. HSI shall also enforce the HSI (HERTZ) Foreign ERB Trademarks, the HSI HERC Foreign ERB Trademarks and HSI (HERTZ) US ERB Trademarks during the Interim Period as more fully set forth in the Trademark, Trade Name, Domain and Related Rights License Agreement. HERC shall be responsible for reimbursing THC and/or HSI for all costs in connection with prosecuting all applications and maintaining in full force and effect all registrations for the HSI (HERTZ) Foreign ERB Trademarks, the HSI HERC Foreign ERB Trademarks and HSI (HERTZ) US ERB Trademarks during the Interim Period. 4. Ownership. The Parties acknowledge and affirm their respective rights in and to the relevant trademark and related rights subject to this Agreement and neither Party shall directly or indirectly attack, challenge or impair the title and related rights of the other Party during the Interim Period or any time thereafter. The Parties shall cooperate to protect, maintain and enforce all relevant trademark and related rights subject to this Agreement. 5. Infringement and Indemnification. 5.1 Notice of Infringement. HERC shall promptly notify HSI of the use of any mark by any third party which HERC considers might be an infringement or passing off of any HERTZ or HERTZ-formative intellectual property used by or licensed to HERC pursuant 6 to the terms hereof or the Trademark, Trade Name, Domain and Related Rights License Agreement. However, HSI shall have the sole right to decide whether or not proceedings shall be brought against such third parties. In the event that HSI decides that action should be taken against such third parties, HSI may take such action either in its own name or, alternatively, HSI may authorize HERC to initiate such action in HERC's name. In any event, the Parties agree to cooperate fully with each other to the extent necessary to prosecute such action, all expenses being borne by the Party bringing such action and all damages which may be recovered being solely for the account of that Party. 5.2 Indemnification of HERC related to use of HERTZ trademark during the Interim Period. HSI shall defend, indemnify and hold HERC harmless against any and all claims, suits, actions or other proceedings whatsoever brought against HERC based on third-party claims of trademark infringement in connection with HERC'S use of the HSI (HERTZ) Foreign ERB Trademarks, the HSI (HERTZ) US ERB Trademarks, the HERC (HERTZ) US ERB Trademarks and the Other Intellectual Property to the extent such claims, suits, actions or other proceedings are based upon use of the HERTZ element comprising a HSI (HERTZ) Foreign ERB Trademark, HSI (HERTZ) US ERB Trademark, HERC (HERTZ) US ERB Trademark or Other Intellectual Property during the Interim Period only and from claims of third parties against HERC or any of its affiliates stemming from HERTZ's use of the HERTZ trademarks. 5.3 Indemnification of THC and HSI. Except as provided in Section 5.2, HERC shall defend, indemnify and hold THC, HSI, and their affiliates, and each of their officers, directors, agents, and employees harmless from and against all costs, expenses, taxes (including interest and penalties, and determined without regard to the tax attributes of any indemnitee) and losses (including reasonable attorney fees and costs) incurred from claims of third parties (including any taxing authority) against either THC, HSI or any of their affiliates stemming from any of the activities contemplated under this Agreement or the Trademark, Trade Name, Domain and Related Rights License Agreement and HERC's use of the HERC trademarks, including without limitation any transfers of rights and actions which relate in any way to the manufacture, distribution, sale or performance or promotion of the Foreign and US Licensed Products and Services (as defined in the Trademark, Trade Name, Domain and Related Rights License Agreement). This provision shall survive the expiration or earlier termination of this Agreement and the Trademark, Trade Name, Domain and Related Rights License Agreement. 5.4 Indemnity Procedure. All claims for indemnification under Section 5.2 and Section 5.3 and any other disputes that arise under this Agreement and the ancillary agreements exhibited hereto will be made in accordance with and governed by the procedures set forth in Article V of the Distribution Agreement. 6. Insurance. HERC shall, throughout the term of this Agreement, obtain and maintain at its own cost and expense, from a
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Extract the exact clause related to "Change Of Control" from the excerpt above.