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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on behalf of SpinCo or any member of the SpinCo Group after the Distribution Date, including, without limitation, any improvements or modifications to any Licensed RemainCo Intellectual Property or Shared Library Materials or any other Intellectual Property licensed by any member of the RemainCo Group or the SpinCo Group pursuant to any other Intellectual Property Agreement, shall belong solely and exclusively to SpinCo and neither RemainCo nor any member of the RemainCo Group shall have any right, title or interest in or to such Intellectual Property. SpinCo shall have no obligation to notify RemainCo or any member of the RemainCo Group of any such improvements or modifications or to disclose or license any such improvements or modifications to RemainCo or any member of the RemainCo Group. Section 2.6 Abandonment of Certain Intellectual Property. SpinCo and RemainCo acknowledge and agree that, as of the Distribution Date, neither SpinCo nor RemainCo has an interest in maintaining or continuing the prosecution and maintenance of the Intellectual Property set forth on Schedule 2.6, which Intellectual Property will be owned and controlled by the SpinCo Group as of the Distribution. SpinCo will, and will cause the applicable members of the SpinCo Group, to take all actions necessary to discontinue the maintenance and prosecution of the Intellectual Property set forth on Schedule 2.6 as of the date any applicable renewal fees are due in the future. For clarity, SpinCo shall not be obligated to affirmatively abandon such Intellectual Property prior to the date that any renewal fees are due in the future. Section 2.7 Reserved. Section 2.8 Steam/its generation and use. The Parties acknowledge and agree that the engineering textbook/publication titled "Steam/its generation and use" and previously titled "Steam" (the "Steam Book") is a highly regarded and well respected publication in worldwide utility and industrial power generation fields. SpinCo and RemainCo acknowledge and agree that, as of the Distribution Date, SpinCo (i) owns all right, title and interest in and to the Copyright in all editions of the Steam Book throughout the world; (ii) shall have the exclusive right to publish and shall be solely responsible for all aspects of the publication of the Steam Book in all languages and in all media of expression now known or later developed, throughout the world, subject to the provisions of this Section 2.8; (iii) shall have the right to retain all proceeds derived from exploiting the Copyright of any edition of the Steam Book; and (iv) subject to Section 2.8(c), shall have the sole right to determine the content contained in all future editions of the Steam Book. (a) SpinCo and RemainCo agree and acknowledge that, although RemainCo was responsible for publishing the current forty-second (42nd) edition of the Steam Book, as of the Distribution Date, all rights, responsibilities, duties and obligations related to the publication, distribution and sale of this edition shall be transferred to SpinCo. SpinCo shall retain all proceeds of the sales of this publication. (b) SpinCo shall have the sole right to use the title Steam/its generation and use to publish future editions of the Steam Book. As between SpinCo and RemainCo, SpinCo will retain and own all Copyrights in and to any future editions of the Steam Book, provided, however, that content contributed by RemainCo in the future may be owned by, and the Copyright therein owned by, RemainCo, as may be set forth in a subsequent agreement related to such contributions. 7 (c) The Parties acknowledge that it is desirable for future editions of the Steam Book to present a comprehensive view of how steam is generated and used from a variety of energy sources including, inter alia, nuclear energy sources. SpinCo shall have the sole right to determine the content contained in future editions of the Steam Book, provided, however, that SpinCo will provide RemainCo with a right of first refusal to collaborate with SpinCo to provide content related to nuclear subject matter in the forty-third (43rd) edition of the Steam Book, with allocation of costs and revenues and any attribution and Copyright ownership with respect to RemainCo contributed content to be negotiated in good faith by the Parties. The foregoing right of first refusal shall cease in the event of a Change of Control of either RemainCo or SpinCo, provided, however, that the Parties will discuss the feasibility of future collaboration, specifically related to the contribution of nuclear related subject matter by RemainCo, in good faith in the event of a Change of Control. (d) RemainCo shall have, and SpinCo
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Extract the exact clause related to "Ip Ownership Assignment" from the excerpt above.