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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known to the receiving party at the time of disclosure; (ii) has become publicly known through no wrongful act of the receiving party; (iii) has been rightfully received from a third party under no obligation to the disclosing party; (iv) has been disclosed by court order or as otherwise required by law if the receiving party has given the disclosing party a reasonable opportunity to contest or limit the scope of such required disclosure. 19. Modification Chase reserves the right to change any and all of the terms and conditions in this Agreement, at any time and in its sole discretion, by posting a new agreement on its Website. Without limiting the generality of the foregoing, the amount of Commissions, the definition of Approved Accounts, and all other provisions of this Agreement are subject to change without notice other than posting such information on the Chase Website. IF ANY MODIFICATION IS UNACCEPTABLE TO AFFILIATE, THE ONLY RECOURSE IS TO TERMINATE THIS AGREEMENT. AFFILIATE'S CONTINUED PARTICIPATION IN THE AFFILIATE PROGRAM FOLLOWING CHASE'S POSTING OF A NEW AGREEMENT ON ITS WEB SITE WILL CONSTITUTE BINDING ACCEPTANCE OF THE CHANGE. 20. Warranty Disclaimer Chase makes no warranties, representations or conditions with regard to the Chase Affiliate Program or any services provided hereunder, whether express or implied, arising by law or otherwise, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OR ANY IMPLIED WARRANTY ARISING OUT OF COURSE OF PERFORMANCE, COURSE OF DEALING OR USAGE OF TRADE. Source: CREDITCARDS.COM, INC., S-1, 8/10/2007 21. Limitation of Damages Chase shall have no liability for any indirect, incidental, special or consequential damages or any loss of revenue or profits arising under or with respect to this Agreement or the Affiliate Program, regardless of whether Chase has been advised of the possibility of such damages. Further, Chase's aggregate liability arising under or with respect to this Agreement or the Affiliate Program shall in no event exceed the total Commissions paid or payable by Chase to Affiliate under this Agreement. 22. Independent Investigation AFFILIATE ACKNOWLEDGES THAT IT HAS READ THIS AGREEMENT, HAS HAD AN OPPORTUNITY TO CONSULT WITH ITS OWN LEGAL ADVISERS IF IT SO DESIRED, AND AGREES TO ALL ITS TERMS AND CONDITIONS. AFFILIATE AGREES THAT, IN INTERPRETING THIS AGREEMENT, NO WEIGHT SHALL BE PLACED UPON THE FACT THAT THIS AGREEMENT HAS BEEN DRAFTED BY CHASE, AND IT SHALL NOT ASSERT THAT THIS AGREEMENT IS UNENFORCEABLE OR INVALID ON THE GROUNDS THAT IT IS A CONTRACT OF ADHESION, THAT IT IS UNCONSCIONABLE, OR ANY SIMILAR THEORY. AFFILIATE UNDERSTANDS THAT CHASE MAY AT ANY TIME (DIRECTLY OR INDIRECTLY) SOLICIT CUSTOMER REFERRALS ON TERMS THAT MAY DIFFER FROM THOSE CONTAINED IN THIS AGREEMENT. 23. Governing Law This Agreement will be governed in all respects by the laws of the State of Delaware, including its conflict with law provisions. Accept. Appendix List of Restricted Trademark Terms Partner Restricted Trademark Terms Chase Brand Add Chase as a negative Keyword to your Search strategy. In addition, the following terms are prohibited: Chase, Chase bank, www.chase.com, www.creditcardsatchase.com, www.chasecreditcard.com, chase.com, creditcardsatchase.com, chasecreditcard.com, chase credit card, chase credit cards, Chase Freedom, Freedom Card AARP AARP.org, AARP.com, AARP membership, AARPmagazine.com, AARPhealthcare.com, AARP foundation, AARP passport, www.travelocity.com/AARP, AARP Bulletin, American Association of Retired Persons, AARP Insurance, AARP partner, AARP providers, AARP advocacy, Segunda Juventud, AARP Hot Deals Amazon Amazon, Amazon.com, www.amazon.com, Amazon Books, Amazon DVD, Amazon Movies, Amazon Music Borders Borders, Borders Stores, Borders Books, www.borders.com, www.bordersbooks.com Waldenbooks, Waldenbooks Stores, www.waldenbooks.com, www.waldenbooksstores.com Source: CREDITCARDS.COM, INC., S-1, 8/10/2007 British Air British Airways, British Air, www.britishairways.com, www.ba.com, ba, Continental See Continental Tab Disney See "Disney" Tab Hess Hess, www.hess.com, Amerada Holiday Inn/Priority Club Holiday Inn, Holiday Inn Express, Priority Club, IHG, www.ichotelsgroup.com, InterContinental, InterContinental Hotels Group, Crowne Plaza, Hotel Indigo, Staybridge Suites, Candlewood Suites, Marathon Marathon, Marathon Oil, Marathon Petroleum Company, Speedway, Speedway SuperAmerica, SuperAmerica Marriott www.marriottrewards.com, www.marriott.com, Marriott, Marriott Rewards Overstock overstock.com, www.overstock.com, overstocked.com, overstock/com, overstock com, overstock com, overstockcom, overstock .com, overstock?com, overstock>com, overstock, overstocked.com, overstocks.com, over stock.com, overstock .com, overstockcom Sony Sony, www.sonystyle.com, ImageStation, My Sony, Vaio, EverQuest Speedway Speedway SuperAmerica, Speedway, SuperAmerica, Speedy Rewards, Marathon, Marathon Oil, Marathon Petroleum Company Starbucks Starbucks, Starbucks Coffee, Starbucks Foundation, Starbucks Coffee Company, Starbucks Corporation Subaru Subaru, My Subaru, Subaru World, Subaru of America Toys www.toysrus.com, Toysrus.com, Toys "R" Us, Toys "R" Us International, Kids"R"Us, Babies"R"Us, Babiesrus.com, Toyologist, Toysrus/Amazon, Babiesrus/Amazon, www.personalizedbyrus.com Trump Trump, www.trump.com, The Apprentice, Trumped, Trump University, Trump Taj Mahal, Trump Plaza, Trump Marina, Trump Indiana, Trump Club Privee, Trump
"""

Extract the exact clause related to "Irrevocable Or Perpetual License" from the excerpt above.

assistant: Not found.