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 4.46 6 rue Adolphe Fischer L-1520 Luxembourg Luxembourg CO-BRANDING AGREEMENT THIS CO-BRANDING AGREEMENT (this "Agreement"), entered into on the 22nd day of August 2005 and effective as of the 22nd day of August 2005 ("Effective Date"), by and among (a) Skype Communications, S.A. ("Skype"), a limited company (société anonyme) incorporated in Luxembourg, with its principal place of business at 6 rue Adolphe Fischer, L-1520 Luxembourg, Luxembourg, (b) Skype Technologies, S.A. ("Skype Holding"), a limited company (société anonyme) incorporated in Luxembourg, with its principal place of business at 6 rue Adolphe Fischer, L-1520 Luxembourg; (c) TOM Online (BVI) Limited ("Online BVI"), a company incorporated in the British Virgin Islands with limited liability, whose correspondence address is at 8th Floor, Tower W3, Oriental Plaza No.1 Dong Changan Avenue, Dong Chang District, Beijing 100738, PRC; (d) TOM Online Inc. ("Tom Holding"), a company incorporated in the Cayman Islands with limited liability and listed on the NASDAQ National Market in the United States of America and the Growth Enterprise Market of The Stock Exchange of Hong Kong Limited, whose correspondence address is at 8th Floor, Tower W3, Oriental Plaza No.1 Dong Changan Avenue, Dong Chang District, Beijing 100738, PRC; and (e) Tel-Online Limited ("Company"), a company incorporated in the Cayman Islands, whose correspondence address is at 8th Floor, Tower W3, Oriental Plaza No.1 Dong Changan Avenue, Dong Chang District, Beijing 100738, PRC. Skype, Online BVI and the Company may be referred to individually as "Party" and collectively as "Parties." Skype, Online BVI, the Company, Skype Holding and Tom Holding may be referred to individually as "party to this Agreement" and collectively as "parties to this Agreement." RECITALS A. Each of Skype, Skype Holding, Online BVI, and Tom Holding are parties to that certain Memorandum of Terms dated October 12, 2004 ("Memorandum"), pursuant to which Skype and Online BVI have, among other things, agreed to (i) create, market and distribute a co- branded, customized version of the Skype Software (as defined below) to be distributed in the PRC (as defined below) by incorporating certain brand features of the Online Group (as defined below), and, (ii) develop and host a co-branded web site or web site content featuring the Online Group's and Skype's brand features as related to the customized version of the Skype Software to be distributed in the PRC; B. The parties to this Agreement are parties to that certain Shareholders' Deed dated as of the date hereof ("Deed"), and Skype and Online BVI are the shareholders of the Company, a newly formed company formed for the purpose of marketing and distributing the Company-Skype Branded Application (as defined below) on the terms of this Agreement; C. Skype is a developer, distributor and supporter of the Skype Software, and is the owner and operator of a web site located at the URL www.skype.com ("Skype Site"); and D. The parties to this Agreement wish to terminate the Memorandum and enter into this Agreement pursuant to which the parties to this Agreement will, inter alia, (i) grant the Company (or Online BVI, to act on behalf of the Company) certain rights to provide co-marketing and co-branding activities, and (ii) expand the business relationship among the parties to this Agreement as they may mutually agree from time to time. 1 Source: TOM ONLINE INC, 20-F, 5/1/2006 AGREEMENT NOW, THEREFORE, in consideration of the mutual covenants contained herein, the parties to this Agreement agree as follows: 1. DEFINITIONS In addition to the capitalized terms defined elsewhere in this Agreement, the following terms shall have the meanings set forth below: 1.1 "Adjusted Net Revenue" means Gross Revenue less Direct Expenses. 1.2 "Affiliate" means in relation to any Person, any Subsidiary or Holding Company, and any company in which such Person or any such Holding Company holds or Controls directly or indirectly not less than 30% of the issued share capital. 1.3 "Affiliate Program" means a marketing and/or advertising affiliate program made generally available from time to time to third parties on non-negotiated and generally available terms by (i) Skype or (ii) any third party that contracts with Skype which (a) is not a Primarily PRC Based Service Provider and (b) operates in multiple international markets (which may include the PRC) ("Third Party Affiliate Partner"), in each case whereby other third parties are permitted to (x) in the case of a program made available by Skype, advertise the Skype Software and/or link to the Skype Site from Web Sites hosted and operated by such third parties, or (y) in the
"""

Extract the exact clause related to "Effective Date" from the excerpt above.

assistant: 22nd day of August 2005