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:
"""
as shall be specified in a notice given in accordance with this Section 10.3): if to Licensor: SINA Corporation 20/F Beijing Ideal International Plaza No. 58 Northwest 4th Ring Road Haidian District, Beijing, 100090 People's Republic of China Facsimile: +86 10 8260 7166 Attention: Head of Legal Department (Xie Guomin) with a copy (which shall not constitute notice) to: Shearman & Sterling LLP 12th Floor East Tower, Twin Towers B-12 Jianguomenwai Dajie Beijing 100022 People's Republic of China Facsimile: +86 10 6563 6001 Attention: Lee Edwards, Esq. if to Licensee: Beijing Yisheng Leju Information Services Co., Ltd. c/o CRIC Holdings Limited No. 383 Guangyan Road Shanghai 200072 People's Republic of China Facsimile: + 86 (21) 6086 7111 Attention: President with a copy (which shall not constitute notice) to: Skadden, Arps, Slate, Meagher & Flom 42/F, Edinburgh Tower, The Landmark 12 Queen's Road Central, Hong Kong Facsimile: +852 3740 4727 Attention: Jonathan B. Stone, Esq. and Z. Julie Gao, Esq. 10.4. Public Announcements. Other than (i) the filing with the SEC of the Form F-1, any amendments thereto and any other documents filed in connection with the Form F-1, 12 Source: CHINA REAL ESTATE INFORMATION CORP, F-1, 9/29/2009 including the filing of this Agreement or (ii) any communications with the relevant stock exchange or regulators in connection with the IPO, in each case, as deemed necessary or desirable in the sole discretion of CRIC, neither party to this Agreement shall make, or cause to be made, any press release or public announcement in respect of this Agreement or the transactions contemplated by this Agreement or otherwise communicate with any news media without the prior written consent of the other party unless otherwise required by Law or applicable stock exchange regulation, and the parties to this Agreement shall cooperate as to the timing and contents of any such press release, public announcement or communication. 10.5. Severability. If any term or other provision of this Agreement is invalid, illegal or incapable of being enforced by any Law or public policy, all other terms and provisions of this Agreement shall nevertheless remain in full force and effect for so long as the economic or legal substance of the transactions contemplated by this Agreement is not affected in any manner materially adverse to either party hereto. Upon such determination that any term or other provision is invalid, illegal or incapable of being enforced, the parties hereto shall negotiate in good faith to modify this Agreement so as to effect the original intent of the parties as closely as possible in an acceptable manner in order that the transactions contemplated by this Agreement are consummated as originally contemplated to the greatest extent possible. 10.6. Entire Agreement. This Agreement constitutes the entire agreement of the Parties hereto with respect to the subject matter hereof and supersedes all prior agreements and understandings, both written and oral, with respect to the subject matter hereof and thereto (including the Original Agreement). 10.7. Assignment. This Agreement and any rights or authority granted hereunder shall not be assigned or transferred by either Party, including by operation of law, merger or otherwise, without the express written consent of the other Party, provided that Licensor may assign this Agreement without consent to any of its Affiliates and Licensee may assign this Agreement without consent to SINA Leju or an Affiliate of Licensee that is controlled by SINA Leju. 10.8. Amendment. This Agreement may not be amended or modified except (a) by an instrument in writing signed by, or on behalf of, both Parties or (b) by a waiver in accordance with Section 10.9. 10.9. Waiver. Either Party may (a) extend the time for the performance of any of the obligations or other acts of the other Party, (b) waive any inaccuracies in the representations and warranties of the other Party contained herein or in any document delivered by the other party pursuant hereto or (c) waive compliance with any of the agreements of the other Party or conditions to such Party's obligations contained herein. Any such extension or waiver shall be valid only if set forth in an instrument in writing signed by the Party to be bound thereby. No waiver of any representation, warranty, agreement, condition or obligation granted pursuant to this Section 10.9 or otherwise in accordance with this Agreement shall be construed as a waiver of any prior or subsequent breach of such representation, warranty, agreement, condition or obligation or any other representation, warranty, agreement, condition or obligation. The failure of
"""

Extract the exact clause related to "Parties" from the excerpt above.

assistant: Licensee