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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shall be payable to E.piphany, Inc. by company check, or via wire transfer to the following account: Silicon Valley Bank - Santa Clara, ABA: 121140399, Account: 3300109833, Money Market. 3.3 TAXES. HSNS is responsible for all taxes (including sales, use, property and value-added taxes), duties and customs fees concerning the Application and/or services, excluding taxes based on E.piphany's income. 3.4 AUDIT. HSNS shall maintain complete and accurate records of its activities under this Agreement for at least two (2) years following termination of this Agreement. HSNS agrees to allow E.piphany, directly or indirectly, to audit HSNS's business records as kept by HSNS in its normal course of business to ensure compliance with the terms and conditions of this Agreement. If the audit reveals that HSNS has failed to comply with the terms of this Agreement, in addition to all other remedies available to E.piphany at law or equity, HSNS shall immediately reimburse E.piphany for any unpaid amounts due and the cost of the audit. 4. WARRANTY 4.1 BY E.PIPHANY. E.piphany warrants that for a period of one (1) year from Effective Date, the Application as used within the scope of this Agreement will perform substantially in accordance with the functions described in the Documentation. E.piphany warrants the Application media is free from material defects in materials and workmanship under normal use for ninety (90) days from the applicable Order Form. E.piphany further warrants that its Maintenance, training and Professional Services will be rendered consistent with generally accepted industry standards for a period of ninety (90) days from performance of such services. 4.2 EXCLUSIVE REMEDIES. For any breach of the warranties contained in Section 4.1, HSNS's sole and exclusive remedy, and E.piphany's entire liability, shall be: (i) in the case of a nonconforming Application, to correct the nonconforming Application, provided that HSNS notifies E.piphany of the nonconformity within the warranty period and HSNS has installed all Updates and, if E.piphany is unable to do so, HSNS shall be entitled to terminate the Application license and recover the fees paid to E.piphany for such Application; (ii) in the case of defective media, to replace such defective media, provided that HSNS returns such defective media during the warranty period; (iii) in the case of infringing Application, the indemnity contained in Section 10.1 ("E.piphany Intellectual Property Indemnify") and (iv) in the case of services to which the breach of warranty relate, the correction of defective work so as to comply with generally accepted industry standards. If E.piphany is unable to perform such services as warranted, HSNS shall be entitled to recover the fees paid to E.piphany for the unsatisfactory services. This limitation of liability applies notwithstanding any failure of the essential purpose of the exclusive remedies. 4.3 DISCLAIMER. THE WARRANTIES SET FORTH IN SECTION 4.1 ARE EXCLUSIVE AND IN LIEU OF AND E.PIPHANY DISCLAIMS ALL OTHER WARRANTIES, WHETHER EXPRESS, STATUTORY OR IMPLIED, INCLUDING ANY WARRANTIES OF MERCHANTABILITY, TITLE OR FITNESS FOR A PARTICULAR PURPOSE. E.PIPHANY DOES NOT WARRANT THAT THE APPLICATION WILL OPERATE IN COMBINATIONS OTHER THAN AS SPECIFIED IN THE DOCUMENTATION OR THAT THE OPERATION OF THE APPLICATION WILL BE UNINTERRUPTED OR ERROR-FREE. PRE-PRODUCTION RELEASES OF APPLICATIONS OR COMPUTER-BASED TRAINING PRODUCTS ARE DISTRIBUTED "AS-IS." 5. MAINTENANCE 5.1 FOR HSNS UNDER LICENSES. E.piphany will provide the Maintenance described below, provided HSNS remains a compliant subscriber to such Maintenance and has paid all monies due therefor. Upon reasonable notice, E.piphany reserves the right to modify the terms and conditions of Maintenance, provided that any such modification will not substantially diminish the level of Maintenance that HSNS is then currently receiving. 5.2 ERROR CORRECTION. E.piphany shall use reasonable efforts to provide workarounds for, and to correct reproducible programming errors in, the Application attributable to E.piphany with a level of effort commensurate with the severity of such errors and in accordance with the terms of Section 5.3 ("Response Times"). Upon identification of any programming error, HSNS shall notify E.piphany of such error and shall provide E.piphany with information sufficient to locate and duplicate the error. 5.3 RESPONSE TIMES. PRIORITY 1: Response in under fifteen (15) minutes for instances in which the Application is down (product is unusable resulting in total disruption of use or outage of the Application). PRIORITY 2: Response in under one (1) hour during technical support desk hours for a major feature or function failure, which results in the operation of the Application being restricted. PRIORITY 3: Response in under four (4) hours during technical support desk hours for a minor feature or function
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Extract the exact clause related to "Warranty Duration" from the excerpt above.

assistant: E.piphany warrants that for a period of one (1) year from Effective Date, the Application as used within the scope of this Agreement will perform substantially in accordance with the functions described in the Documentation.