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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first day of each fiscal quarter of each fiscal year during the term hereof, commencing with the Licensee's fiscal year which begins on April 1, 1999, Licensee shall pay to Licensor, as an advance (a "Royalty Advance") of royalties anticipated to be paid hereunder during such fiscal year, an amount equal to twenty-five percent (25%) of the Annual Royalty Advance Requirement for such fiscal year. The aggregate amount of Royalty Advances outstanding from time to time shall be credited against royalties payable hereunder pursuant to Section 3.1 as and when such royalties are recognized as earned in accordance with generally accepted accounting principles. Royalty Advances made hereunder shall be made in respect of royalties that may become payable in respect of any and all Licensed Products and shall not be deemed made in respect 2 of any particular Licensed Product. With respect to any royalty payments due hereunder from Licensee to Licensor in excess of the amount of Royalty Advances made by Licensee from time to time hereunder, such payments shall be payable on the later of (i) sixty (60) days after the date of the applicable invoice to a Redistributor or Customer, as the case may be, or (ii) five (5) business days following Licensee's receipt of payment from a Redistributor or Customer, as the case may be. Any royalty payment that is not paid when due will bear interest from the date such amount is due until the date payment is made at a rate equal to ten percent (10%) per annum. All royalty payments due to Licensor under this Agreement shall be paid in U.S. Dollars. Upon the expiration or any termination of this Agreement, Licensor shall repay to Licensee the aggregate amount of all Royalty Advances then outstanding. 3. AMENDMENT OF TERM. Section 14.1 of the Distributor Agreement is hereby amended to read in its entirety as follows: Section 14.1 TERM. This Agreement shall be effective through and including March 31, 2004. Upon the expiration of such term, this Agreement will renew automatically for successive terms of one (1) year each unless either party to this Agreement delivers written notice of termination to the other party to this Agreement at least sixty (60) days prior to the end of the original or any renewal term. 4. AMENDMENT OF TERMINATION PROVISIONS. The provisions of Section 14.2 are amended by deleting in its entirety subsection (b) thereof and by amending Section 14.2(a)(2) to read in its entirety as follows: (2) Immediately upon written notice if the other party defaults in the performance of any obligation under this Agreement, including failure to promptly pay any amount due hereunder, and fails to cure such default within thirty (30) days after delivery of written notice specifying the default (with any termination as a result of Licensee's failure to pay amounts due under this Agreement resulting in acceleration of Licensee's obligation to pay all sums accrued and payable to Licensor under this Agreement as of the date of such termination). 5. AMENDMENT OF NATURE OF DISTRIBUTORSHIP. Licensor and Licensee do hereby agree that this Amendment shall effect a change in the nature of the distributorship granted to Licensee pursuant to the Distributor Agreement from a non-exclusive to an exclusive distributorship (provided, however, that with respect to Licensor's Partitioned Database Facility product, Licensor also may license such product to International Business Machines Corporation for sublicensing and distribution). Any and all references in the Distributor Agreement to the rights granted to Licensee as non-exclusive rights are hereby amended to provide that such rights are 3 exclusive rights (including without limitation such references in Sections 2.1 (Use of Master Copy), 2.2 (Sublicensing) and 2.8 (Trademarks and Copyright).). 6. AMENDMENT OF SECTION 13.1. The Distributor Agreement is hereby amended by adding the following sentence to the end of Section 13.1: Notwithstanding the foregoing, the foregoing limitation on liability shall not be applicable in respect of any liability of Licensor to Licensee resulting from any misrepresentation in, or breach of, the terms of Section 6.2 hereof or in respect of Licensor's obligation to repay Royalty Advances pursuant to Section 3.2 hereof. 7. CHANGE OF ADDRESSES FOR NOTICE. Section 15.2 of the Distributor Agreement is hereby amended by changing the address for notice to each of Licensor and Licensee to the following: 14100 Southwest Freeway, Suite 500 Sugar Land, Texas 77478 Attn: President 8. ADDITION OF RIGHT OF FIRST REFUSAL. The Distributor Agreement is hereby amended by adding thereto a new Section 15.11 and a new Section 15.12,
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Extract the exact clause related to "Exclusivity" from the excerpt above.

assistant: Licensor and Licensee do hereby agree that this Amendment shall effect a change in the nature of the distributorship granted to Licensee pursuant to the Distributor Agreement from a non-exclusive to an exclusive distributorship (provided, however, that with respect to Licensor's Partitioned Database Facility product, Licensor also may license such product to International Business Machines Corporation for sublicensing and distribution).