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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Link from the V-Solutions Area; and (vi) VerticalNet shall cease displaying or transmitting all Banners and Newsletters of Impresse. 5.4. Following expiration or termination of this Agreement, the terms and provisions of Article 4 [THE COMMERCIAL TERMS] above shall continue to govern Impresse's payment obligations for any payment obligations accruing during the term of this Agreement. Following termination, Impresse shall provide VerticalNet with a final accounting with respect to this Agreement and tender payment of amounts due under Article 4 [THE COMMERCIAL TERMS] at the next scheduled payment date. 6. DISPUTE RESOLUTION 6.1. NEGOTIATION AND ESCALATION. If any controversy or claim arises relating to this Agreement, the parties will attempt in good faith to negotiate a solution to their differences, including progressively escalating any controversy or claim through senior levels of management. If negotiation does not result in a resolution within 30 days of the date one party first notifies the other of the controversy or claim, either party may resort to arbitration under Section 6.2 [ARBITRATION]. 6.2. ARBITRATION. Any controversy or claim between the parties concerning any breach or alleged breach of this Agreement or performance or nonperformance of any obligation under this Agreement which cannot be resolved by negotiation will be resolved by binding arbitration under this Section 6.2 [ARBITRATION] and the then-current Commercial Rules and supervision of the American Arbitration Association (the "AAA"). If any part of this Section 6.2 [ARBITRATION] is held to be unenforceable, it will be severed and will not affect either the duty to arbitrate or any other part of this Section 6.2 [ARBITRATION]. The arbitration will be held before a sole disinterested arbitrator who is knowledgeable in business information and the Internet and experienced in handling commercial disputes. The arbitrator shall be appointed jointly by the parties hereto within 30 days following the date on which the arbitration is instituted. If the parties are unable to agree upon the arbitrator within such 30-day period, the AAA shall be instructed to select such arbitrator within 15 days thereafter. The arbitrator's award will be final and binding and may be entered in any court having jurisdiction. The arbitrator will not have the power to award punitive or exemplary damages, or any damages excluded by, or in excess of, any damage limitations expressed in this Agreement. Issues of arbitrability will be determined in accordance solely with the federal substantive and procedural laws relating to arbitration; in all other respects, the arbitrator will be obligated to apply and follow the substantive law of the State of Delaware. 7 6.3. EQUITABLE RELIEF. Notwithstanding anything to the contrary in this Agreement, in the event of an alleged violation of Article 7 [CONFIDENTIALITY] of this Agreement by either party, the party alleging such a violation may seek temporary and permanent injunctive or other appropriate equitable relief from any court of competent jurisdiction pending appointment of an arbitrator. The party requesting such relief shall simultaneously file a demand for arbitration of the dispute, and shall request that the AAA proceed under its rules for an expedited hearing. 6.4. COSTS. Unless the arbitrator, if any, determines otherwise, each party will bear its own attorneys' fees and other costs associated with the negotiation and arbitration provided for by this Article 6 [DISPUTE RESOLUTION], except that costs and expenses regarding the arbitrators shall be shared equally. If court proceedings to stay litigation or compel arbitration are necessary, the party who unsuccessfully opposes such proceedings will pay all associated costs, expenses and attorneys' fees that are reasonably incurred by the other party. To the extent that any claim in arbitration relates to the collection of amounts owed under Article 4 [THE COMMERCIAL TERMS], the party entitled to collect such amounts shall be entitled to recover all reasonable costs of collection, including expenses and attorneys' fees that are incurred. 6.5. TWO YEAR LIMITATION. Except for claims under Sections 9.4 [INDEMNIFICATION BY IMPRESSE] and 9.5 [INDEMNIFICATION BY VERTICALNET] Source: IMPRESSE CORP, S-1/A, 3/22/2000 hereof, neither party may bring a claim or action regardless of form, arising out of or related to this Agreement, including any claim of fraud or misrepresentation, more than two years after the cause of action accrues or becomes known, whichever is later. 6.6. CONFIDENTIALITY. In order to facilitate the resolution of controversies or claims between the parties with respect to each party hereto, such controversies or claims, including details regarding negotiations, arbitration and settlement terms, shall be treated as Confidential Information of the other party hereto in accordance with Article 7 [CONFIDENTIALITY].
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Extract the exact clause related to "Covenant Not To Sue" from the excerpt above.

assistant: hereof, neither party may bring a claim or action regardless of form, arising out of or related to this Agreement, including any claim of fraud or misrepresentation, more than two years after the cause of action accrues or becomes known, whichever is later.