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:
"""
or termination of this Agreement each party shall upon request promptly return all tangible Confidential Information received from the other party. 12.5 Survival of Confidentiality Obligations. This Article 12 will survive the termination of this Agreement, for any item of Confidential Information, for five (5) years after the disclosure of such Confidential Information to the receiving party under this Agreement. 13. CONFIDENTIALITY OF AGREEMENT. D2 and LICENSEE agree that the terms and conditions of this Agreement shall be treated as confidential and shall not be disclosed to any third party without the Software License D2 Technologies, Inc. and Maintenance Agreement August 4, 1997 CONFIDENTIAL 15 prior written consent of the other party. Notwithstanding the statements above in this Article 13, any party may disclose any of the terms and conditions of this Agreement; (i) as required by any court of other governmental body; (ii) as otherwise required by law (including without limitation with regard to any registration statement filed by a party with the Securities and Exchange Commission); (iii) to legal counsel of the parties; (iv) in confidence, to accountants, banks, and financing sources, and other advisors or consultants of the parties; (v) in connection with the enforcement of this Agreement or rights under this Agreement; (vi) in confidence, in connection with an actual or proposed license, merger, acquisition, or similar transaction; (vii) which have been previously disclosed in a joint press release by the parties hereto, or (viii) in confidence, to a third party to the extent reasonable necessary to permit the consideration of a bona fide collaboration which would involve rights, obligations or limitations arising under this Agreement, provided that such collaboration is not prohibited under this Agreement. In the event of any disclosure pursuant to (i) or (ii) above, the disclosing party shall use all reasonable efforts to obtain confidential treatment of materials so disclosed. The parties shall in good faith consult regarding the text of any proposed public announcement regarding this Agreement or the terms and conditions hereof before such announcement is actually made. Any press release to be issued in connection with the terms and conditions of this Agreement must be approved in advance by both parties. 14. EXPORT RESTRICTIONS LICENSEE's distribution of products incorporating Licensed Technology shall be subject to all United States laws and regulations governing the license and delivery of technology and products abroad by persons subject to the jurisdiction of the United States. LICENSEE shall not export any such products without first Software License D2 Technologies, Inc. and Maintenance Agreement August 4, 1997 CONFIDENTIAL 16 obtaining all required licenses and approvals from the appropriate government agencies. 15. GENERAL 15.1 Governing Law. This Agreement shall be governed by and interpreted in accordance within the laws of the State of New York without reference to conflicts of laws provisions. 15.2 Venue. The parties agree that any litigation arising out of this Agreement shall be brought in the state courts in Delaware. 15.3 Partial Invalidity. If any provision in this Agreement shall be found or be held to be invalid or unenforceable in any jurisdiction in which this Agreement is being performed, then the meaning of said provision shall be construed, to the extent feasible, so as to render the provision enforceable, and if no feasible interpretation would save such provision, it shall be severed, solely in such jurisdiction, from the remainder of this Agreement, which shall remain in full force and effect. In such event, the parties shall negotiate, in good faith, a substitute, valid and enforceable provision, effective solely in such jurisdiction, which most nearly effects the parties' intent in entering into this Agreement. 15.4 Relationship of the Parties. D2 and LICENSEE are independent contractors under this Agreement. Nothing contained in this Agreement is intended to, nor is it to be construed so as to, constitute D2 and LICENSEE as partners or joint ventures with respect to this Agreement. Employees of any party remain employees of said party and shall at not time be considered agents of or to be obligated to render a fiduciary duty to the other party. 15.5 Modification. No alteration, amendment, waiver, cancellation or any other change in any term or condition of this Agreement shall be valid or binding on any party unless the same shall have been mutually assented to in writing by both parties. 15.6 Waiver. The failure of any party of enforce at any time any of the provisions of this Agreement, or the failure to require at any time performance by the other
"""

Extract the exact clause related to "Price Restrictions" from the excerpt above.

assistant: Not found.