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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to the Annual Marketing Plan. 4.2 Promotion Fee. (a) Calculation of Promotion Fee. From the Launch Date and ending on the last day of the next Calendar Quarter and each subsequent Calendar Quarter during the Term, Exact shall owe Pfizer a service fee equal to fifty percent (50%) of the product of: Laboratory Service Revenue minus Baseline Laboratory Service Revenue ("Incremental Laboratory Service Revenue") for the Calendar Quarter multiplied by Gross Margin Percent for the Calendar Quarter (such product, the "Promotion Fee"). In no event shall the Gross Margin Percent used in the calculation of the Promotion Fee be less than sixty-eight percent (68%) or more than seventy-four percent (74%). The calculation of the Promotion Fee pursuant to this Section 4.2(a) is subject to Section 4.2(c) below. Promotion Fee(s) and all compensation paid by Exact to Pfizer under this Agreement, even where calculated as a percentage of sales, is intended to compensate Pfizer a fair market value for the entirety of services that Pfizer is providing to Exact hereunder. The formula for the calculation of the Promotion Fee is as follows: A = Laboratory Service Revenue B = Baseline Laboratory Service Revenue C = Gross Margin Percent Promotion Fee = 0.5 * (A-B) * C 31 Source: EXACT SCIENCES CORP, 8-K, 8/22/2018 (b) Baseline Laboratory Service Revenue. The chart below sets forth the Baseline Laboratory Service Revenue for the Product for each Calendar Year during the Term (the "Calendar Year Baseline Laboratory Service Revenue"). In the Annual Marketing Plan the appropriate Calendar Year Baseline Laboratory Service Revenue shall be allocated among each Calendar Quarter during such Calendar Year, taking into consideration seasonality or other sales demand variables. For 2018, the first Calendar Quarter shall be from the Launch Date to December 31, 2018 and the Calendar Year Baseline Laboratory Service Revenue allocated to that Calendar Quarter shall be $130 million. Calendar Year Baseline Laboratory Service Revenue 2018 $441 million 2019 $622 million 2020 $861 million 2021 $1.191 billion (c) Supplemental Promotion Fee. (i) Subject to Pfizer's compliance with Sections 3.4(a)(i) and 3.4(a)(ii), (A) Exact shall pay Pfizer the amount, if any, by which the aggregate amount of the Promotion Fee incurred by Exact to Pfizer during the remainder of 2018 Calendar Year and 2019 Calendar Year (the "First Promotion Fee Period") is less than $37.5 million (the "First Supplemental Promotion Fee"), and (B) Exact shall pay Pfizer the amount, if any, by which the aggregate Promotion Fee incurred by Exact to Pfizer during each of Calendar Year 2020 and 2021 is less than $30 million ("Annual Supplemental Promotion Fee"), in each case to compensate Pfizer for the sales, Marketing and other performance provided by Pfizer under this Agreement. (ii) As of June 30 of each Calendar Year during the Term, Exact shall calculate a partial-period amount to be paid toward the potential First Supplemental Promotion Fee or the potential Annual Supplemental Promotion Fee, as the case may be. With regard to the First Supplemental Promotion Fee, the partial-period payment shall be equal to the amount by which the Promotion Fee for 2018, and the first six (6) months of Calendar Year 2019, is less than $22.5 million, and with regard to each Annual Supplemental Promotion Fee, the partial-period payment shall be equal to the amount by which the Promotion Fee for the six-month (6-month) period through June 30 is less than $15 million. (iii) As of December 31 of each Calendar Year during the Term, Exact shall calculate the First Supplemental Promotion Fee or the Annual Supplemental Promotion Fee, as the case may be, if any, for the entirety of the applicable period. Exact shall pay Pfizer the First 32 Source: EXACT SCIENCES CORP, 8-K, 8/22/2018 Supplemental Promotion Fee or the Annual Supplemental Promotion Fee, as the case may be, if any, less any partial-period payment made by Exact during the applicable period pursuant to Section 4.2(c)(ii). (iv) To the extent the amount of the Promotion Fee for the First Promotion Fee Period exceeds the First Supplemental Promotion Fee, Exact shall be entitled to a credit of such excess amount up to the amount of any partial-period payment made by Exact during such First Promotion Fee Period pursuant to Section 4.2(c)(ii), and Exact shall apply such credit toward the Promotion Fee payment due Pfizer for the fourth Calendar Quarter of 2019 (or due for subsequent Calendar Quarters until such credit is fully exhausted). To the extent the amount of the Promotion Fee for any Calendar Year after 2019 exceeds the
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Extract the exact clause related to "Revenue/Profit Sharing" from the excerpt above.

assistant: Subject to Pfizer's compliance with Sections 3.4(a)(i) and 3.4(a)(ii), (A) Exact shall pay Pfizer the amount, if any, by which the aggregate amount of the Promotion Fee incurred by Exact to Pfizer during the remainder of 2018 Calendar Year and 2019 Calendar Year (the "First Promotion Fee Period") is less than $37.5 million (the "First Supplemental Promotion Fee"), and (B) Exact shall pay Pfizer the amount, if any, by which the aggregate Promotion Fee incurred by Exact to Pfizer during each of Calendar Year 2020 and 2021 is less than $30 million ("Annual Supplemental Promotion Fee"), in each case to compensate Pfizer for the sales, Marketing and other performance provided by Pfizer under this Agreement.