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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from the platforms. 10.8 In case any act of either party is in violation of several provisions of this Agreement at the same time, the observing party is entitled to choose one provision as the basis for the investigation and affixation of the liability for breach of the breaching party. In case several acts of either Party Are in violation of several provisions of this Agreement at the same time, the observing party is entitled to investigate and affix the liability for breach of the breaching party in accordance with each provision violated. 10.9 In the event of several valid agreements between Party A and Party B, any act of either party is in violation of such agreements between the Parties at the same time, the observing party is entitled to choose to investigate and affix the liability for breach of the breaching party in accordance with all provisions of all of such agreements or provisions of part of such agreements. Contract No.: DDCX S DG KC 201812130044 11. Governing Law; Dispute Settlement 11.1 The execution, validation, interpretation, performance, modification and termination of this Agreement and the settlement of disputes under this Agreement shall be governed by the Laws of China. 11.2 Any dispute arising from the interpretation and performance of the terms of this Agreement shall be settled by the Parties through negotiation in good faith. If the Parties fail to reach an agreement on the settlement of such dispute within 30 days from the requirement of such negotiation by either party, such dispute may be submitted to the Beijing Arbitration Commission for arbitration in accordance with its arbitration rules in force then. The arbitral award shall be final and binding upon the Parties. 11.3 During the settlement of the dispute, the Parties shall continue to fully perform this Agreement, except for the matters in dispute. 12. Notices 12.1 All notices and other communications to either party hereto required or permitted hereunder shall be made in Chinese, by personal delivery or by registered mail with postage prepaid, commercial courier service or by e-mail to the address of the party specified in this Agreement. The date on which such notice shall be deemed to have been served upon such party shall be determined as follows: 12.1.1 Notices given by personal delivery, registered mail with postage prepaid or commercial courier service shall be deemed effectively given on the date of receipt or rejection at the designated address for notices; 12.1.2 Notices given by e-mail shall be deemed effectively given when the mail enters into the addressee's e-mail address contained in this article or at the time of the receipt of the system prompt for the failed transaction in the case of the invalidation of receiver's e-mail address. 12.2 For the purpose of notices, the contacts and contact information designated by the Parties are as follows: 12.2.1 Party A's contacts: (Telephone/Mobile number:) Address: E-mail: 12.2.2 Party B's contacts: Xianglong Li (Telephone/Mobile number: 0731-85240273) Address:Floor 9, Huitong Building, No. 168 Hehua Road, Hehua Street, Furong District, Changsha City, Hunan Province E-mail: 77128824@qq.com 12.3 In the event of any change to the contacts, address or e-mail address of either party, such party shall notify the other Party At least 3 working days in advance by the means provided in this article. Otherwise, the original address or e-mail address shall still be the valid address for notices. Contract No.: DDCX S DG KC 201812130044 13. Force Majeure 13.1 "Force Majeure" means an event beyond the reasonable control of the Parties, unforeseeable or even foreseeable, but unavoidable by the Parties to this Agreement, which prevents, affects or delays the performance by either party of its obligations under this Agreement in whole or in part. Such event includes, but is not limited to, natural disaster, war, fire, riot, strike, Internet connection failure, computer system failure, communication failure, computer virus, hacker attack or any other similar events that shall be considered as events of force majeure in accordance with commercial practices. 13.2 The affected party may temporarily suspend the performance of its obligations under this Agreement until the effects of the event of force majeure are eliminated. The affected party shall fully notify the other party in writing of the occurrence of such event of force majeure in a timely manner, notifying the other party of the possible effects of such event on this Agreement, and shall use its best efforts to eliminate such event and mitigate its adverse effects, and provide the written evidence issued by relevant
"""

Extract the exact clause related to "Source Code Escrow" from the excerpt above.

assistant: Not found.