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:
"""
IGER to CERES in this Agreement with respect to such IGER INTELLECTUAL PROPERTY or JOINT INTELLECTUAL PROPERTY, will be read as the grant of an exclusive sublicense under IGER's exclusive license from Defra. CERES-IGER Collaboration Agreement Page 28 of 75 IN WITNESS WHEREOF, IGER and CERES have caused this Agreement to be duly executed as indicated below. INSTITUTE OF GRASSLAND AND ENVIRONMENTAL RESEARCH CERES, INC. By: /s/ MERVYN HUMPHREYS By: /s/ RICHARD FLAVELL Name: Professor Mervyn Humphreys Name: Richard Flavell, CBE, FRS Title: Director Title: Chief Scientific Officer By: /s/ RICHARD HAMILTON Name: Richard Hamilton Title: President and Chief Executive Officer CERES-IGER Collaboration Agreement Page 29 of 75 EXHIBIT A to the Collaboration Agreement between IGER and CERES DEFINITION OF COLLABORATION CROPS Miscanthus and interbreeding species, including without limitation Saccharum and Erianthus species. CERES-IGER Collaboration Agreement Page 30 of 75 EXHIBIT B to the Collaboration Agreement between IGER and CERES PREFERRED FORM OF RECEIPT FORM Packing Slip and Receipt Form for material transferred pursuant to the Collaboration Agreement dated [x] between INSTITUTE OF GRASSLAND AND ENVIRONMENTAL RESEARCH and CERES, INC. and SCHEDULES to such Agreement. Material transferred pursuant to SCHEDULE [x] dated [...] The undersigned [IGER/CERES] signatory certifies that the material and related information set forth hereinafter are included in the shipment with which this form is enclosed. The undersigned [IGER/CERES] signatory acknowledges having received in good order the material and related information set forth hereinafter. The signature does not constitute an acceptance of the receiving party's qualification of the intellectual property (IP) status of the material transferred, such IP status being defined in the Parties' Collaboration Agreement. [Include description of material and related information with indication of IP status (e.g. Background, Joint IP) and any restrictions on transfer to subcontractors.] THIS MATERIAL AND RELATED INFORMATION ARE TRANSFERRED ONLY FOR USE IN COMPLIANCE WITH THE ABOVE MENTIONED COLLABORATION AGREEMENT AND SCHEDULE. CONFIDENTIALITY OBLIGATIONS APPLY. For sending/receipt, For receipt/sending, Signature: Signature: Date: Date: Name: Walter E. Nelson Name: Title: Product Development Manager CERES, INC. Title: INSTITUTE OF GRASSLAND AND ENVIRONMENTAL RESEARCH CERES-IGER Collaboration Agreement Page 31 of 75 EXHIBIT C to the Collaboration Agreement between IGER and CERES PREFERRED FORMS OF VARIETY EVALUATION AGREEMENT (to be used for field evaluation) FIELD TRIAL AGREEMENT (Non transgenic. Fee for service. Academic.) and FIELD TRIAL AGREEMENT (Non transgenic. No payment. Academic.) PREFERRED FORM OF MATERIAL TRANSFER AGREEMENT (to be used for transfer of material for other purposes than field evaluation) CERES-IGER Collaboration Agreement Page 32 of 75 FIELD TRIAL AGREEMENT (Non transgenic. Fee for service. Academic.) 1. THE PARTIES This Agreement is made effective on [date] ("Effective Date") by and between [Ceres, Inc., a Delaware corporation with principal offices at 1535 Rancho Conejo Blvd., Thousand Oaks, CA 91320, United States of America] or [Institute of Grassland and Environmental Research, a company limited by guarantee, registered in England No. 473456 and a registered Charity No. 272150, having an office at Plas Gogerddan, Aberystwyth, Ceredigion, SY23 3EB, United Kingdom] hereinafter "[CERES/IGER]," and [Party information to be completed], hereinafter "[Party]." THE PARTIES HERETO COVENANT AND AGREE AS FOLLOWS: 2. FIELD TRIAL PROGRAM 2.1 [CERES/IGER] will deliver to [Party] seeds or other propagating material as described in ANNEX I and related information (jointly referred to as the "CERES/IGER Plant Material"). The delivery conditions are set forth in ANNEX I. Promptly upon receipt of the CERES/IGER Plant Material, Party will sign and return the Receipt Form, in the preferred format attached as ANNEX II to this Agreement, to [CERES/IGER] (attn: [responsible person at CERES/IGER]). 2.2 [Party] agrees to perform the activities defined in ANNEX I which shall be referred to hereinafter as the "Program." With reasonable notice [CERES/IGER] may change the activities to be performed in the Program. If such changes do not result in additional work to be performed by [Party], but consist for example of changes in experimental design or in observations to be made or in information to be included in reports, they shall be set forth in a written document provided by [CERES/IGER] to [Party] which will be attached to ANNEX I and form part of it. If such changes result in additional work to be performed by [Party] and require an adaptation of the remuneration, they shall be set forth in an amendment to this Agreement signed by both Parties. [CERES/IGER] will consider any suggestions for changes in the Program which [Party] may suggest. 2.3 In performing the Program activities [Party] undertakes to comply with the work plan and time schedule set forth in
"""

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

assistant: INSTITUTE OF GRASSLAND AND ENVIRONMENTAL RESEARCH