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:
"""
(c) a notice sent by facsimile transmission is deemed duly served upon the receipt time as is shown on the transmission confirmation of relevant documents. Intellectual Property Agreement 4 Party A: JingWei HengTong Technology (ShenZhen) Co., Ltd. Address: Room 1605 B,Tianan Hi-tech Plaza Tower A,Tian An Cyber Park,Futian District,Shenzhen Attn: Ms. Wei Zhang Fax: 86-0755-82924449 Tel: 86-0755-82924488 Party B: ShenZhen JingWei Communication Co., Ltd. Address: Tianxiang Building Block A 13th, Tian An Cyber Park, Futian District, Shenzhen. Attn: Mr. Wei Li Fax: 86-0755-82924449 Tel: 86-0755-82924488 11. Assignment or Sublicense: This Agreement and all the rights and obligations of Party B hereunder shall not be assigned, pledged, sublicensed without the prior written consent of Party A. 12. Applicable Law: The validity, implementation and interpretation of this Agreement shall be governed by the laws of PRC. 13. Amendment and Supplement: Any amendment and supplement of this Agreement shall be made by both parties in writing. The amendment and supplement duly executed by both parties shall be deemed as a part of this Agreement and shall have the same legal effect as this Agreement. 14. Severability: If any clause hereof is judged as invalid or non-enforceable according to relevant laws, such clause shall be deemed invalid only within the applicable area of the Laws and without affecting other clauses hereof in any way. 15. Appendices: The Appendices referred to in this Agreement are an integral part of this Agreement and have the same legal effect as this Agreement. IN WITNESS THEREOF Both Parties hereto have caused this Agreement to be duly executed on their behalf by a duly authorized representative as of the date first set forth above. Party A: JingWei HengTong Technology (ShenZhen) Co., Ltd. Legal Representative/Authorized Representative: Seal: Party B: ShenZhen JingWei Communication Co., Ltd. Legal Representative/Authorized Representative: Seal: 5 Appendix 1 List of Intellectual property Item Certificate Name Certificate number Issue date 1 Product Registration Certificate (Operation analysisV1.0) (经篛分析炑件V1.0) 深 DGY - 2003 - 0164 2003.3.6 2 Product Registration Certificate (NGNbilling and operationV2.1)(NGN综合篛帐和瑟狇炑件V2.1) 深 DGY - 2005 - 0030 2005.1.27 3 Product Registration Certificate (YL-2000Telecom operation billingV3.X)(宇恧YL-2000电信业务瑟狇帐务系统V3.X) 深 DGY - 2001 - 0177 2001.6.15 4 Product Registration Certificate (YLDC-2000multiserver data collectionV2.10)(YLDC-2000羬机渹椺炑件V2.10) 深 DGY - 2003 - 0163 2003.3.6 5 Product Registration Certificate (YL-2001major account managementV2.0)(YL-2001大客户管理炑件V2.0) 深 DGY - 2003 - 0105 2003.3.6 6 Product Registration Certificate (Data ware housingV1.0)(新宇恧炑件数据仓库炑件V1.0) 深 DGY - 2006 - 0780 2006.3.16 7 Product Registration Certificate (GT800-OBSSoperationV3.0)新宇恧GT800-OBSS篛帐炑件V3.0) 深 DGY - 2006 - 0363 2006.4.29 8 software ownership certificate (NGNopeation and billingV2.1)(NGN综合篛帐和瑟狇炑件V2.1) 2005SR02400 2005.03.03 9 software ownership certificate (telecom operation strategic analysisV1.0)(电信决策支持系统V1.0) 2004SR03050 2004.04.08 List of Consumer Data Acquisition and Management Contracts Contract Contract Partner 1 Consumer Data Acquisition and Management Contract ShenZhen HongTian Hi-Tech Development Co, Ltd 深圳市宏天攨科技发展有榰公司 2 Consumer Data Acquisition and Management Contract ShenZhen Doubi Digital Tech Co, Ltd 深圳市多比数码技术有榰公司 3 Consumer Data Acquisition and Management Contract GuangDong FengDa Hi-Tech Co, Ltd 广东丰灂攨科技有榰公司 Intellectual Property Agreement 6 Appendix 2 Account and payment method of License Fee Party B should pay for All Intellectual Property RMB 1,000,000 per year to Party A as license fee. Party B shall pay the license fee to the account designated by Party A before December 31 each year. Party A has the right to determine whether or not to exempt the Party B's obligation to pay license fee at its discretion. Intellectual Property Agreement 7
"""

Extract the exact clause related to "Post-Termination Services" from the excerpt above.

assistant: Not found.