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:
"""
hereunder. Each Co-Branded Page will display the name and/or brands of Sponsor and Excite. 5 6 CONFIDENTIAL Sponsor and Excite will collaborate on the "look and feel" of the Co-Branded Pages including, but not limited to, the display, appearance and placement of the parties' respective names and/or brands and of advertising displayed on the Co-Branded Pages. Excite will have final approval over the "look and feel" of the Co-Branded Pages, which approval will not be unreasonably withheld. b) The Co-Branded Area will reside completely on the Sponsor Site. Sponsor will have sole responsibility for providing and maintaining, at its expense, the Sponsor Site, the Co-Branded Area, the content displayed on the Co-Branded Site and any updates thereto. c) Each Co-Branded Page will include one or more links to the Excite Site. Excite will supply Sponsor with the URLs for these links. d) Excite may, upon fifteen (15) days prior notice to Sponsor, request reasonable revisions to the Co-Branded Area as needed to reflect changes that will not adversely affect Sponsor, such as changes to Excite's name and/or brand or changes to the URLs for the links to the Excite Site. Sponsor will use reasonable efforts to accommodate Excite's requested changes within the fifteen (15) day period. e) Excite may incorporate reasonable portions of the Content on the Excite Site. Each such display of the Content will count as an Impression, as defined in Section 2(a). Excite will provide links to the Co-Branded Area from any pages on the Excite Site on which the Content appears. In its discretion, Excite may elect to provide additional links to the Co-Branded Area from other locations on the Excite Network and/or Broadcast Pages. f) Reasonable excerpts or portions of the Content may be incorporated into Broadcast Pages, at Excite's discretion. Excite will have sole control over of the content, composition, "look and feel" and distribution of the Broadcast Pages. 6. PROMOTIONS a) Excite and Sponsor will work together in good faith to create promotions specifically for customers of the Co-Branded Area. Such joint promotions, when possible and where Sponsor controls any applicable rights, will include but not be limited to the following: 6 7 CONFIDENTIAL - [****] - [****] - [****] - [****] - [****] - [****] - [****] - [****] - [****] - [****] b) Neither party will make any public statement, press release or other announcement relating to the terms of or existence of this Agreement without the prior written approval of the other. Notwithstanding the foregoing, Sponsor hereby grants to Excite the right to issue an initial press release, the timing and wording of which will be subject to Sponsor's reasonable approval, regarding the relationship between Excite and Sponsor. 7. SPONSORSHIP FEES AND TRANSACTION COMMISSIONS a) [****] will be due to Excite on the Effective Date as compensation for Excite's costs of initiating access to the Excite Site, programming costs, set-up costs and other expenses associated with Excite's initiation of the links, placements, advertisements and promotions contemplated by the Agreement. b) Sponsor will pay Excite [****] per year as compensation for being the exclusive online retail music store sponsor of the Excite Site. 7 8 CONFIDENTIAL c) Sponsor will pay Excite [****] in the first year of the term of the Agreement as compensation for on-going programming, links, placements, advertisements and promotions contemplated by this Agreement. d) Sponsor will pay Excite [****] in the second year of the term of the Agreement as compensation for on-going programming, links, placements, advertisements and promotions contemplated by this Agreement. e) Sponsor will make payments to Excite according to the following schedule: DATE PAYMENT ---- ------- Effective Date [****] Commencement Date [****] 12/31/97 [****] 1/1/98 [****] 4/1/98 [****] 7/1/98 [****] 10/1/98 [****] 1/1/99 [****] 4/1/99 [****] 7/1/98 [****] f) Sponsor will pay Excite a share of all gross margins Sponsor realizes on transactions, advertising, sponsorship, promotions and any other revenue generated during each year of the term of the Agreement on the Sponsor Site as a result of users referred from the Excite Site ("Total Revenue"), subject to the following conditions: i) "Gross margin" is defined as [****]. ii) Total Revenue will be measured at the end of every three months after the Commencement Date. This three-month Total Revenue amount will be compared to an amount equal to two (2) times the corresponding three-month share of the applicable sponsorship fee described in Sections 6(c) and 6(d) (each pro rata share a "Revenue Floor"). 8 9 CONFIDENTIAL iii) If the Total Revenue earned by Sponsor during
"""

Extract the exact clause related to "Notice Period To Terminate Renewal" from the excerpt above.