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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adopted by the SEC; or (v) encourage, assist or enter into any discussions, negotiations, arrangements or understandings with any third party with respect to any of the foregoing, or otherwise form, join or in any way participate in a "group" (as defined in Section 13(d)(3) of the Exchange Act) in connection with any of the foregoing. JANA also agrees not to, and to cause its Affiliates and Associates not to, request during the Cooperation Period that the Company (or its directors, officers, employees or agents), directly or indirectly, amend or waive any provision of this Section (including this sentence), publicly or in a manner that would require public disclosure of such request. (f) Nothing in this Agreement shall be deemed to limit JANA's ability to provide its views privately to the Board on any matter or to privately request a waiver of any provision of this Agreement, provided that such actions are not reasonably expected to require public disclosure of such actions. 8. Public Announcement and SEC Filing. (a) JANA and the Company shall announce this Agreement and the material terms hereof including the terms of Section 6 by means of a joint press release in the form attached hereto as Exhibit A (the "Press Release") as soon as practicable but in no event later than 9:00 a.m., New York City time, on March 17, 2014. (b) JANA shall promptly prepare and file an amendment (the "13D Amendment") to its Schedule 13D with respect to the Company filed with the SEC on February 27, 2014 reporting the entry into this Agreement and amending applicable items to conform to its obligations hereunder. The 13D Amendment shall be consistent with the Press Release and the terms of this Agreement. JANA shall provide the Company with reasonable opportunity to review and comment upon the 13D Amendment prior to filing, and shall consider in good faith any changes proposed by the Company necessary to cause such 13D Amendment to comply with this Agreement. 9. Definitions. For purposes of this Agreement: (a) the terms "Affiliate" and "Associate" shall have the respective meanings set forth in Rule 12b­2 promulgated by the SEC under the Securities Exchange Act of 1934, as amended (the "Exchange Act"); (b) the terms "beneficial owner" and "beneficially own" shall have the same meanings as set forth in Rule 13d­3 promulgated by the SEC under the Exchange Act except that a person shall also be deemed to be the beneficial owner of all Shares which such person has the right to acquire (whether such right is exercisable immediately or only after the passage of time) pursuant to the exercise of any rights in connection with any securities or any agreement, arrangement or understanding (whether or not in writing), regardless of when such rights may be exercised and whether they are conditional, and all Shares which such person or any of such person's Affiliates or Associates has or shares the right to vote or dispose; and (c) the terms "person" or "persons" shall mean any individual, corporation (including not­for­profit), general or limited partnership, limited liability or unlimited liability company, joint venture, estate, trust, association, organization or other entity of any kind or nature. 10. Notices. All notices, consents, requests, instructions, approvals and other communications provided for herein and all legal process in regard hereto shall be in writing and shall be deemed validly given, made or served, if (a) given by telecopy and email, when such telecopy is transmitted to the telecopy number set forth below and sent to the email address set forth below and the appropriate confirmation is received or (b) if given by any other means, when actually received during normal business hours at the address specified in this Section: if to the Company: URS Corporation 600 Montgomery Street, 26th Floor San Francisco, California 94111 Attention: General Counsel Facsimile: (415) 834-1506 Email: joseph.masters@urs.com with a copy to: Wachtell, Lipton, Rosen & Katz 51 W. 52nd Street New York, NY 10019 Attention: David E. Shapiro Facsimile: (212) 403-2000 Email: DEShapiro@wlrk.com if to JANA: JANA Partners LLC 767 Fifth Avenue, 8th Floor New York, New York 10153 Attention: General Counsel Facsimile: (212) 455-0901 Email: jennifer.fanjiang@janapartners.com with a copy to: Schulte Roth & Zabel 919 Third Avenue New York, NY 10022 Attention: Marc Weingarten Facsimile: (212) 593-5955 Email: marc.weingarten@srz.com 11. Specific Performance; Remedies. (a) In furtherance and not in limitation of Section 11(b), the parties hereto shall be entitled to seek an injunction or injunctions to prevent breaches of this Agreement and to enforce
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Extract the exact clause related to "Expiration Date" from the excerpt above.

assistant: Not found.