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:
"""
from the date hereof, Company will submit to Pey Dirt a fully paid policy or certificate of insurance naming Pey Dirt, Pey Dirt's agent and Manning as additional insured parties, requiring that the insurer shall not terminate or materially modify such without written notice to Pey Dirt at least twenty (20) days in advance thereof. 17. Waiver. The failure of either party at any time or times to demand strict performance by the other of any of the terms, covenants or conditions set forth herein shall not be construed as a continuing waiver or relinquishment thereof and each may at any time demand strict and complete performance by the other of said terms, covenants and conditions. 18. Bankruptcy. If Company shall become bankrupt or insolvent, or if Company's business shall be placed in the hands of a Receiver, Assignee or Trustee, whether by voluntary act of Company r otherwise, the Contract Period shall, at the option of Pey Dirt, immediately terminate. 19. Assignment. This Agreement shall bind and inure to the benefit of Pey Dirt and the successors and assigns of Pey Dirt. Nothing herein shall prevent Pey Dirt from assigning the monetary benefits of this Agreement as it may so desire. Further, inasmuch as it is recognized that Pey Dirt is the representative of Manning, Pey Dirt may at any time assign this Agreement to Manning and, in such event, Pey Dirt shall have no further obligation or liability in connection herewith and Pey Dirt's position vis-a-vis Company in connection herewith shall be in all respects the same as if Pey Dirt had signed this Agreement as agent rather than as principal from the beginning. The rights granted Company hereunder shall be used only by it and shall not, without the prior written consent of Pey Dirt, be transferred or assigned to any other. In the event of the merger or consolidation of Company with any other entity, Pey Dirt shall have the right to terminate the Contract Period by so notifying Company in writing on or before sixty (60) days after Pey Dirt has received notice of such merger or consolidation. 20. Arbitration. In the event a dispute arises under this agreement which cannot be resolved, such dispute shall be submitted to arbitration and resolved by a single arbitrator (who shall be a lawyer) in accordance with the Commercial Arbitration Rules of the American Arbitration Association then in effect. All such arbitration shall take place at the office of the American Arbitration Association located in Nashville, Tennessee. Each party is entitled to depose one (1) fact witness and any expert witness designated by the other party, and to conduct such other discovery as the arbitrator deems appropriate. The award or decision rendered by the arbitrator shall be final, binding and conclusive and judgment may be entered upon such award by any court. -8- 21. Significance of Headings. Section headings contained herein are solely for the purpose of aiding in speedy location of subject matter and are not in any sense to be given weight in the construction of this Agreement. Accordingly, in case of any question with respect to the construction of this Agreement, it is to be construed as though such section headings had been omitted. 22. Entire Agreement. This writing constitutes the entire agreement between the parties hereto and may not be changed or modified except by a writing signed by the party or parties to be charged thereby. 23. Governing Law. This Agreement shall be governed and construed according to the law of Tennessee. 24. Reservation of Rights. All rights not herein specifically granted to Company shall remain the property of Pey Dirt to be used in any manner Pey Dirt deems appropriate. Company understands that Pey Dirt has reserved to itself the right to authorize others to use Pey Dirt Identification within the Contract Territory and during the Contract Period in connection with all tangible and intangible items and services other than Products themselves. 25. No Joint Venture. This Agreement does not constitute and shall not be construed as constituting a partnership or joint venture between Turn 2 and Company. Neither party shall have any right to obligate or bind the other party in any manner whatsoever, and nothing herein contained shall give, or is intended to give, any rights of any kind to any third person. 26. Authorization. The execution, delivery and performance of this Agreement by Company and by Pey Dirt has been duly authorized and approved by the Board of Directors
"""

Extract the exact clause related to "Anti-Assignment" from the excerpt above.

assistant: The rights granted Company hereunder shall be used only by it and shall not, without the prior written consent of Pey Dirt, be transferred or assigned to any other.