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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and power generation, or both. "Power Density" means the product of the average cell or stack current density and the average cell potential. "Prior JDA" means the agreement between the Parties effective April 30, 2016 entitled Joint Development Agreement bearing ExxonMobil Document No. EM09080. "Prior JDA Background Information" means Background Information as defined in the Prior JDA. "Prior JDA Project Patents" means Project Patents as defined in the Prior JDA, which by definition are jointly-owned by the Parties. "Prior JDA Project Results" means Project Results as defined in the Prior JDA, which by definition are jointly-owned by the Parties. "Project(s)" is defined in Paragraphs 2.01 (Program / Projects). "Project Description" is defined in Paragraph 2.01 (Program / Projects). "Program" is defined in Paragraph 2.01 (Program / Projects). "Program Information" means all information and associated copyrights, whether or not patentable, that is conceived, created, developed or acquired in or for the Program during the Term of the Agreement from any source (including from any employee of either Party or its Affiliates, or from any Party's or its Affiliates' contractors or consultants, whether alone or jointly with one or more others) in the course of and as a result of working directly on the Program. Program Information shall be owned by ExxonMobil and its Affiliates. Program Information specifically includes Program Inventions and Program Samples. Program Information also includes improvements to either Party's Background Information conceived, created, developed or acquired in or for the Program and resulting directly from activities performed in the course of and as a result of working directly on the Program. "Program Inventions" means Program Information that is characterized as inventions, discoveries, or improvements (whether patentable or not) that are conceived, created, developed, or acquired by or on behalf a Party or its Affiliates during the Term of this Agreement and one (1) year thereafter, and in the course of and as a result of working directly on the Program. Program Inventions shall also include Project Inventions (as defined in the Prior JDA) that have not been filed with any national, regional, or international patent body or organization by the Effective Date of this Agreement. Program Inventions shall be owned by ExxonMobil and its Affiliates. Page 28 of 31 Source: FUELCELL ENERGY INC, 8-K, 11/6/2019 "Program Patents" means all patents and patent applications (including continuations, continuations-in-part, or divisions thereof, any patent resulting therefrom, and reissues, re-exams or extensions thereof, and revisions thereof arising from oppositions, inter or ex partes proceedings, or other patent office or judicial proceedings) filed with any national, regional, or international patent body or organization after the Effective Date of this Agreement, that are based upon and/or claim one or more features of Program Inventions. Program Patents shall be owned by ExxonMobil and its Affiliates. "Program Results" means, collectively Program Information, Program Patents, and copyrightable works resulting from the Program. "Program Sample" means a sample of material, component, device, or the like that is developed during the Term of this Agreement, in the course of and as a result of working directly on the Program. "Receiving Party" means the Party that receives, directly or indirectly, information or other materials from the Disclosing Party. "Research Costs" means Direct Costs plus FTE Costs. "Scope" is defined in the preamble. "Steering Committee" or "SC" is defined in Paragraph 3.01 (Steering Committee). "Sample" means collectively FCE Background Sample, ExxonMobil Background Sample, and Program Sample. "Technical Manager" is defined in Paragraph 3.02 (Technical Managers). "Term" or "Term of this Agreement" is defined in Paragraph 12.01 (Term). "Total Research Cost" is defined in Paragraph 10.01(a) (Project Costs). "Willful Misconduct" means an intentional disregard of good and prudent standards of performance or of any of the substantive terms of this Agreement. "Work" means any activities of any kind, including but not limited to, research and development, pilot plant, manufacture testing, demonstration, or commercial development/deployment. Page 29 of 31 Source: FUELCELL ENERGY INC, 8-K, 11/6/2019 APPENDIX B - SAMPLE PROJECT DESCRIPTION FORMAT PROJECT DESCRIPTION No. ____ Project Name: __________________ LAW-2019-3608 FCE Agreement No. :____________ Date: ________________________ Receiving Company Name & Address Attention: ______________________ Dear ______________, This Project Description No. [NUMBER] is issued pursuant to the Joint Development Agreement, effective [EFFECTIVE DATE] between ExxonMobil Research and Engineering Company ("ExxonMobil") and FuelCell Energy, Inc. ("FCE"), bearing ExxonMobil Agreement No. LAW-2019-3608 ("Agreement"). Each Party's activities hereunder will be conducted in accordance with and subject to the terms and conditions of the Agreement. The specific terms which will apply to this Project are described below. 1. PROJECT DESCRIPTION/OBJECTIVES:
"""

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

assistant: ExxonMobil