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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21 EXHIBIT C FORM OF SUBLICENSE [Form follows.] 22 EXHIBIT D FORM OF AGREEMENT FOR TRIAL [Form follows.] 23 FIRST AMENDMENT TO DISTRIBUTOR AGREEMENT THIS FIRST AMENDMENT TO DISTRIBUTOR AGREEMENT (this "Amendment") is made and entered into as of the 1st day of January, 1999, by and between Peregrine/Bridge Transfer Corporation, a Delaware corporation ("Licensor"), and NEON Systems, Inc., a Delaware corporation ("Licensee"). RECITALS: Licensor and Licensee are parties to that certain Distributor Agreement dated as of January 1, 1996 (the "Distributor Agreement"). Licensor and Licensee desire to amend the Distributor Agreement as set forth herein. NOW, THEREFORE, for and consideration of the mutual covenants of the parties set forth herein, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as follow: 1. AMENDMENT OF DEFINITIONS. Article 1 of the Distributor Agreement is hereby amended to add thereto the following: 1.11 "Annual Royalty Advance Requirement" shall mean (i) $1,000,000 in respect of Licensee's fiscal year beginning April 1, 1999, (ii) $2,000,000 in respect of Licensee's fiscal year beginning April 1, 2000, (iii) $3,000,000 in respect of Licensee's fiscal year beginning April 1, 2001, (iv) $4,000,000 in respect of Licensee's fiscal year beginning April 1, 2002 and (v) $5,000,000 in respect of Licensee's fiscal year beginning April 1, 2003. In the event that the term hereof extends beyond Licensee's fiscal year beginning April 1, 2003, the amount of the Annual Royalty Advance shall increase by $1,000,000 for each such fiscal year thereafter. 1.12 "Royalty Advance" shall have the meaning provided therefor in Section 3.2 hereof. 1.13 "Specified Royalty Percentage" shall mean fifty percent (50%) for the period from and including January 1, 1999 through and including March 31, 1994. Thereafter, the term "Specified Royalty Percentage" shall mean (i) fifty percent (50%) from and after the first day of each quarter of each fiscal year of Licensee commencing with Licensee's fiscal year beginning April 1, 1999) until such time, if any, during such quarter that the aggregate amount of all Royalty Advances outstanding as of the first day of such quarter (including the Royalty Advance payable on such first day) has been credited against royalties earned hereunder (a "Satisfaction Date"), and (ii) forty percent (40%) from and after a Satisfaction Date through and including the last day of the fiscal quarter in which such Satisfaction Date occurs. 2. AMENDMENT OF SECTIONS 3.1 AND 3.2. Sections 3.1 and 3.2 of the Distributor Agreement are hereby amended to read in their entirety as follows: Section 3.1 ROYALTIES TO LICENSOR. (a) Licensee shall pay to Licensor for each Licensed Product licensed to a Redistributor or a Customer a royalty equal to the Specified Royalty Percentage of all revenues received (without deduction for value added tax, if any, but excluding any revenues for maintenance and support or upgrade services, which revenues are covered in paragraph (b) below) by Licensee under the Redistributor Agreement or Sublicense applicable to such Licensed Product. (b) Licensee shall pay to Licensor for maintenance and support and upgrade services provided under the applicable Sublicense or other written maintenance and support agreement with or approved by Licensee for each of the Licensed Products a royalty equal to the Specified Royalty Percentage of all revenues received (without deduction for value added tax, if any) by Licensee from a Redistributor or Customer relating to maintenance and support services or services for Upgrades or upgrades of systems for such Licensed Products. Section 3.2 TERMS OF PAYMENT. The royalties payable to Licensor pursuant to Section 3.1 shall be payable in accordance with the provisions of this Section 3.2. On or before the 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
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Extract the exact clause related to "Revenue/Profit Sharing" from the excerpt above.

assistant: On or before the 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.