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:
"""
Exhibit 10.1 CERTAIN CONFIDENTIAL PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED AND REPLACED WITH "[***]". SUCH IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THIS EXHIBIT BECAUSE IT IS (I) NOT MATERIAL AND (II) WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF DISCLOSED. Execution Version Network Build and Maintenance Agreement Between Commnet Wireless, LLC And AT&T Mobility LLC Source: ATN INTERNATIONAL, INC., 10-Q, 11/8/2019 Mobility Network General Agreement TABLE OF CONTENTS Page 1.1 Scope 1 1.2 Scope of Agreement 1 1.3 Term of Agreement 1 2.1 Definitions 1 2.2 Affiliate 1 2.3 Agreement 2 2.4 Attorney's Fees 2 2.5 AT&T Competitor 2 2.6 AT&T Indemnified Parties 2 2.7 Cell Site 2 2.8 Change Management Plan 2 2.9 Change of Control 2 2.10Change Order 2 2.11Control 2 2.12Customer Information 3 2.13Deliverable 3 2.14Delivery or Completion 3 2.15Delivery Date or Completion Date 3 2.16Documentation 4 2.17Drug Screen 4 2.18Employment Claims 4 2.19Excusable Delay 4 2.20FirstNet Authority 4 2.21Information 5 2.22Intellectual Property Rights 5 2.23Items 5 2.24Laws 5 2.25Liability 5 2.26Lien 5 2.27Litigation Expense 5 2.28Loss 5 2.29Material 6 2.30Non-Service Affecting Defect 6 2.31OEM 6 2.32Permits 6 2.33Person 6 2.34Physical Entry 6 2.35Restricted Entities 6 2.36Service Affecting Defect 7 2.37Services 7 Proprietary and Confidential This Agreement and information contained therein is not for use or disclosure outside of AT&T, its Affiliates, and third party representatives, and Vendor except under written agreement by the contracting parties. ii Source: ATN INTERNATIONAL, INC., 10-Q, 11/8/2019 Mobility Network General Agreement TABLE OF CONTENTS 2.38Software 7 2.39Specifications 7 2.40Subcontractor 7 2.41Suspend a Site, Suspend or Suspension 7 2.42System 7 2.43Third Party Loss 7 2.44Vendor Indemnified Parties 7 2.45Vendor Person 8 2.46Work 8 2.47Writing or Written 8 3.1 General Terms 8 3.2 Affiliate 8 3.3 Amendments and Waivers 8 3.4 Anticipated and Actual Delays in Delivery and Performance 8 3.5 Anticorruption Laws 9 3.6 Assignment and Delegation; Change of Control 10 3.7 Compliance with Laws 11 3.8 Conflict of Interest 11 3.9 Construction and Interpretation 11 3.10Cumulative Remedies 12 3.11Delivery, Performance and Acceptance 12 3.12Entire Agreement 13 3.13Force Majeure 14 3.14Government Contract Provisions and Flow Downs 14 3.15Governing Law 16 3.16Indemnity 16 3.17Information 18 3.18Infringement 21 3.19Insurance 25 3.20Invoicing and Payment 28 3.21Licenses and Patents 29 3.22Limitation of Damages 29 3.23Offset Right 29 3.24Material and Services Furnished by Vendor and AT&T 29 3.25Non-Exclusive Market 29 3.26Notice of Certain Events 30 3.27Notices 30 3.28Offshore Work Prohibited 32 3.29Order of Precedence 32 3.30Ownership of Paid-For Development, Use and Reservation of Rights 32 3.31Publicity 33 Proprietary and Confidential This Agreement and information contained therein is not for use or disclosure outside of AT&T, its Affiliates, and third party representatives, and Vendor except under written agreement by the contracting parties. 3 Source: ATN INTERNATIONAL, INC., 10-Q, 11/8/2019 Mobility Network General Agreement TABLE OF CONTENTS 3.32Records and Audits 34 3.33Restricted Entities 37 3.34Severability 37 3.35Supplier Citizenship and Sustainability 37 3.36Survival of Obligations 37 3.37Taxes 37 3.38Termination and Suspension 39 3.39Third Party Administrative Services 42 3.40Third Party Beneficiaries 42 3.41Title and Risk 43 3.42Title To Material Furnished by AT&T 43 3.43Transaction Costs 44 3.44Utilization of Minority, Women, and Disabled Veteran Owned Business Enterprises 44 3.45Vendor Personnel and Employment Matters 44 3.46Warranty 44 3.47Subcontractors; Work Done By Others 47 3.48Affordable Care Act 48 3.49Customer Information 48 3.50Reimbursable Expenses 50 4.1 Special Terms 50 4.2 Access 50 4.3 AT&T Supplier Information Security Requirements (SISR) 50 4.4 Background Checks 51 4.5 Clean Up 52 4.6 Vendor's Audited Financial Statements 52 4.7 Vendor Personnel Information 52 4.8 Damage to Property 52 4.9 Dispute Resolution 53 4.10Electronic Data Interchange (EDI) 54 4.11Emergency Work 55 4.12Hazardous Material and Regulated Substances 55 4.13Identification of Vendor's Personnel and Equipment 57 4.14Independent Contractor 57 4.15Inspection of Material 58 4.16Inspection of Work 58 4.17Liens 58 4.18Notification of Injury or Damage 59 4.19Protection of Property 59 4.20Releases Void 59 4.21Removal and Management of Used Batteries 59 4.22Resource Recovery Center 60 Proprietary and Confidential This Agreement and information contained therein is not for use or disclosure outside of AT&T, its Affiliates, and third party representatives, and Vendor except under written agreement by the contracting parties. 4 Source: ATN INTERNATIONAL, INC., 10-Q, 11/8/2019 Mobility Network General Agreement TABLE OF CONTENTS 4.23Safety Management 60 4.24Technical Support 61 4.25Testimony 61 4.26AT&T Data and AT&T Derived Data (Big Data) 61 4.27Business Continuity Plan 63 4.28Change in Laws 63 4.29FOSS 63 5.1 Execution of Agreement 64 5.2 Transmission of Original Signatures and Executing Multiple Counterparts 64 Exhibit A: Government Flow Downs and Contract Clauses Exhibit B: Supplier Information Security Requirements (SISR) Exhibit C:
"""

Extract the exact clause related to "Exclusivity" from the excerpt above.

assistant: Not found.