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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Contract No.: DDCX S DG KC 201812130044 Exhibit 10.5 Collaboration Agreement This Collaboration Agreement (hereinafter referred to as this "Agreement") is made and entered into by and between the following parties in Haidian District, Beijing. This Agreement may be executed in paper form offline or in electronic form through the Didi Chuxing Online Contracting Platform (website: https://Agreement.didichuxing.com/, hereinafter referred to as the "Contracting Platform"). The Agreement executed offline in paper form shall become effective upon the completion of the execution by both Parties (hereinafter referred to as the "Effective Date"); and the Agreement executed online in electronic form shall become effective upon the completion of the execution on the Contracting Platform by both Parties (hereinafter referred to as the "Effective Date") recorded by the third-party Online Document Depository. Party A: Didi Chuxing Technology Co., Ltd. Legal Representative: Ting Chen Party B: Hunan Ruixi Financial Leasing Co., Ltd Legal Representative: Xianglong Li Party A and Party B shall be individually referred to as a "Party" and collectively as the "Parties". Whereas 1. As a company providing third-party e-commerce platform services, and desires to assist the Driver User (hereinafter referred to as the "Driver User") registered on the platform to lease vehicles from Party B with the most favorable treatment in the market, so as to reduce the cost of using vehicles for the Driver User; 2. Party B is an automobile leasing company, with the qualification, resources and ability to carry out the automobile financial leasing business, and it acknowledges and undertakes to implement the platform rules formulated by Party A; 3. Both Parties hope to clarify the cooperation contents, rights and obligations of each Party And other matters through this Agreement. NOW, THEREFORE, the Parties hereto agree as follows: 1. Definitions Unless otherwise stated, the following terms used in this Agreement shall have the following meanings: 1.1 "Platform" refers to the third-party e-commerce platform operated by Party A: Xiaoju Online Ride-Hailing Marketplace. Contract No.: DDCX S DG KC 201812130044 1.2 "Platform Rules" refers to normative documents related to the platform noticed to Party B by Party A by E-mail or other means as well as the various normative documents published on the platform such as the Regulations on Vehicle Rental Service Business of Xiaoju Online Ride-hailing Marketplace and Code of Conduct and Risk Notification of Vehicle Service Company. 1.3 "Didi" refers to Party A, Party A's Affiliates and their respective software and platforms operated by them. 1.4 "Ride-hailing Vehicles" refers to the online car-hailing vehicles. 1.5 "Ride-hailing Service" refers to the online non-peripatetic car hailing service provided by certain entities through the service platforms based on Internet technology using qualified vehicles and Driver Users, which integrates supply and demand information. 1.6 "Affiliates" refers to companies that have an affiliated relationship with each other, including, but not limited to, the companies, firms, corporations or other organizations of such nature established, participated in the establishment, operated, controlled by shareholders, legal representative, actual controllers or directors, supervisors, etc. and their immediate family members, collateral relatives within three generations, close relatives, etc. 1.7 "Senior Management" refers to the officers defined in the Company Law of the People's Republic of China and the chief executive officer, chief financial officer, supervisors, etc. in a company. 1.8 "Laws" refers to laws, administrative regulations, local laws and regulations, autonomous regulations and separate regulations promulgated by the competent authorities, rules and regulations of the Ministries and Commissions of the State Council and local governments, judicial interpretations, normative documents, etc. in China. 1.9 "Period of Cooperation" refers to the term of validity of this Agreement. 1.10 "Confidential Information" refers to any oral or written materials and information exchanged between the Parties in respect of this Agreement, including, but not limited to, the following: 1.10.1 The content of this Agreement and its supplemental agreement(s); 1.10.2 The business (including, but not limited to, business decisions, management methods, operating strategies, incentive strategies, promotional information), operating, financial, technical, product, service information of any party obtained or received by the other party during the performance of this Agreement or during the term of this Agreement; 1.10.3 The other party's user profiles, information, etc.; 1.10.4 The processes and results of settlement of any dispute arising from this Agreement 1.11 "Intellectual Property Rights" refers to: (a) patents and patent applications; (b) trademarks, service marks, trade names, trade dress and domain names, and goodwill exclusively attached thereto; (c) copyrights, including the copyrights of computer software and the copyrights of the database; (d) secrets and proprietary information, including trade
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Extract the exact clause related to "Parties" from the excerpt above.

assistant: Party A and Party B shall be individually referred to as a "Party" and collectively as the "Parties".