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:
"""
Exhibit 10.9 CONTENT LICENSING AGREEMENT between Data Call Technologies, Inc. 600 Kenrick, Suite B-12 Houston, Texas 77060 hereinafter referred to as "Licensor" and PLAN_B MEDIA AG Schaafenstr. 25 50676 Cologne Germany hereinafter referred to as "plan_b" 1 PURPOSE OF THE AGREEMENT 1.1 The purpose of this content distribution Agreement (hereinafter "Agreement") is to set forth the terms and conditions under which plan_b may use the Content ("Content" as set forth in APPENDIX 2) owned or licensed by LICENSOR for a commercial distribution to plan_b's End Users in the territory ("Territory" as set forth in APPENDIX 2). 1.2 End User means any third Party receiving Content on a mobile device for a payment in accordance with the terms and conditions of this Agreement for their own private and non- commercial use. 2 OBLIGATIONS OF LICENSOR 2.1 LICENSOR shall make a first delivery of Content to plan_b within 14 days after the signing of this Agreement unless separately agreed between the Parties. 2.2 LICENSOR shall deliver Content according to the specifications (for example formats, file sizes) set by plan_b or to be agreed between the Parties in writing. 2.3 LICENSOR grants plan_b for the term of this Agreement the right to produce, market and distribute Content to End Users (in the territory specified in appendix 2) through its own and its partner's platform. 3 OBLIGATIONS OF PLAN_B 3.1 plan_b will distribute Content to End Users in the Territory through its distribution channels. 3.2 plan_b shall use reasonable commercial efforts to market and stimulate interest in the Content with its customers. 3.3 plan_b shall provide LICENSOR with a detailed written record, which includes the number of End User downloads and each distribution channel. Such report shall be provided to LICENSOR in electronic format within 6 weeks of the end of a quarter. 3.4 LICENSOR shall have the right to use a certified public accountant to inspect and audit all the related records and books of plan_b to ensure plan_b's compliance with the terms of this Agreement. In the event that any such audit reveals that plan_b has underpaid fees to the value of ten (10) percent or more of the total amount of payments for the period covered by the audit, plan_b shall bear the cost of the audit and shall in any event immediately pay to LICENSOR Source: DATA CALL TECHNOLOGIES, SB-2/A, 9/18/2006 the full value of the underpaid or under-reported fees. Such audits shall normally be conducted during normal business hours at plan_b's premises. 4 REVENUES 4.1 plan_b shall pay LICENSOR a share of its revenues as set forth in APPENDIX 2 ("REVENUES"). 4.2 All shares are net, plus the respective applying value added tax (if applicable). 5 INTELLECTUAL PROPERTY RIGHTS 5.1 LICENSOR is the owner of all intellectual property rights, including without limitation, any and all patents, utility models, trade marks, rights in designs, trade, business or domain names, know-how, rights in databases and copyrights, rights in inventions, ideas, concepts, trade secrets and confidential information which have to be given to fulfill this contract. 5.2 In the alternative, if LICENSOR is not the sole and exclusive owner of all of the foregoing intellectual property rights to the Content, LICENSOR has been granted by the owner or rightful sub-licensee of the intellectual property of the Content the right to grant the rights provided by LICENSOR to plan_b under this Agreement. 5.3 LICENSOR grants to plan_b a license to produce, use, distribute, promote and publicly display the Content in any possible way for distribution and marketing purposes. Additionally, Licensee shall have the right to use the trademarks, trade names, or logos relating to Content (the "TRADEMARKS"). 5.4 LICENSOR warrants that Content does not infringe an intellectual property right enforceable in the agreed country of delivery or use. LICENSOR indemnifies and holds harmless plan_b against all claims that Content infringes any of the above mentioned rights of a third Party. LICENSOR shall pay all damages awarded in a trial to a third Party. 6 CONFIDENTIALITY 6.1 Each Party shall keep in confidence all material and information, including without limitation Content, received from the other Party and marked as confidential or which should be understood to be confidential, and may not use such material or information for any other purposes than those set forth in this Agreement. The confidentiality obligation shall, however, not be applied to material and information, which as shown by the receiving Party, 6.1.1 is generally available or otherwise public; or 6.1.2 the receiving Party has received from a third party
"""

Extract the exact clause related to "Covenant Not To Sue" from the excerpt above.

assistant: Not found.