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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materials warranty period as set forth above), any defects exists or arise, then in each case upon receipt of notice of such defect, Subcontractor shall (unless EDGE chooses another remedy) promptly cause such defect(s) to be repaired or remedied at Subcontractor's sole cost and expense, including but not limited to the costs of transportation, uncovering, removal, disposal, replacement, correction, installation and covering. Subcontractor shall commence or cause the commencement of repairs immediately upon receipt of notice from EDGE and thereafter diligently pursue same to completion or cause the same to be diligently pursued to completion. EDGE shall have the right without prejudice to any other rights or remedies available to it, (i) to make such repairs and offset the cost thereof against any amounts owed to be paid by EDGE to Subcontractor or invoice Subcontractor therefore which invoice shall be paid net 30 days or (ii) require Subcontractor to refund the price of the Work not meeting the warranties. Subcontractor will extend the warranty period if Subcontractor has been grossly negligent in the performance of any Work under this Agreement. Notwithstanding anything to the contrary contained in this Agreement, Subcontractor shall not be liable or responsible for any defect in any materials used by Subcontractor if such defect was not due to Subcontractor's acts or omissions. STRATEGIC ALLIANCE AGREEMENT "EDGE-FTE" Page 7 D. These warranties extend to the future performance of the materials and shall continue for the longer of (a) the warranty period applicable to EDGE' sales to Customer of the material or of products which incorporate the material, (b) one year after the material is accepted by EDGE or (c) such greater period as may be specified elsewhere in this Agreement. Repaired and replacement material shall be warranted as set forth above in this clause. 18. PROTECTION OF PERSONS AND PROPERTY A. Subcontractor represents and warrants (i) that Subcontractor has experience in the type of Work to be performed and in the occupational safety and health practices that are required for that type of work; (ii) that Subcontractor's employees are properly trained and equipped to perform the Work; (iii) that Subcontractor is aware of the risks inherent in performing such Work and Subcontractor expressly assumes the risk of loss or injury that may result from the Work. B. Subcontractor shall comply with all applicable laws (including, without limitation the Federal Occupational Safety and Health Act, Hazardous Communication Requirements, and all applicable environmental protection laws, rules, regulations and ordinances), ordinances, rules, regulations and lawful orders of any public authority having jurisdiction for the safety of persons or property or to protect them from damage, injury or loss. Subcontractor shall comply with all occupational safety and health requirements, including such related publications (not included; but incorporated herein by reference): · National Electrical Code Handbook, most recent edition. · Occupational Safety and Health Administration Handbook. · National Electrical Safety Code, most recent edition. · All System pole attachment agreements. · Applicable utility practices of states named, General Order #95 and General Order #128. C. Without limitation of the Subcontractor's obligations regarding safety and protection, Subcontractor shall: STRATEGIC ALLIANCE AGREEMENT "EDGE-FTE" Page 8 1) Confine operations at the site to areas permitted by law, ordinances, permits, this Agreement and the Purchase Orders; 2) erect and maintain, as required by existing conditions and performance of the Work, safeguards for safety and protection, including posting danger signs and other warnings against hazards, promulgating safety regulations and notifying owners and users of adjacent sites and utilities; 3) not unreasonably encumber the site with materials or equipment or load or permit any part of the construction or site to be loaded so as to endanger its safety; 4) not bring hazardous materials onto the site without prior written authorization by EDGE; 5) exercise utmost care and carry on its activities under supervision of properly qualified personnel, when use or storage of explosives or other hazardous materials or equipment or unusual methods are necessary for execution of the Work; and 6) dispose of any hazardous materials in accordance with applicable law. D. Without limitation of Subcontractor's obligation under this Agreement, the Subcontractor shall indemnify EDGE as identified in Section 13 for any Claims caused by hazardous materials. 19. CLEAN UP Subcontractor shall at all times keep the Work premises free from accumulations of waste material, rubbish, and any other debris resulting from the Work. On an ongoing basis as the Work progresses, and at the completion of the Work, Subcontractor shall restore to essentially its former condition,
"""

Extract the exact clause related to "Source Code Escrow" from the excerpt above.

assistant: Not found.