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:
"""
Table of Contents Exhibit 4.28 SERVICE AGREEMENT 1 OCTOBER 2019 WPP 2005 LIMITED and JOHN ROGERS Table of Contents CONTENTS Clause Page 1. Interpretation 3 2. Commencement of Appointment 4 3. Executive's Duties 4 4. Place of Work 5 5. Working Hours 5 6. Remuneration 5 7. Expenses 6 8. Pensions 6 9. Insurances 7 10. Sickness Absence 8 11. Holidays 8 12. Other Interests 8 13. Confidential Information 9 14. Intellectual Property 10 15. Termination of Employment 12 16. Garden Leave 14 17. Office as a Director 14 18. Protective Covenants 15 19. Data Protection 15 20. Grievance and Disciplinary Procedure 15 21. Collective Agreements 16 22. General 16 Signatories 16 Schedule 1. Power of Attorney 17 2. Incentive Plans 18 3. Protective Covenants 21 Table of Contents THIS AGREEMENT is made on 1 October 2019 BETWEEN: (1) WPP 2005 LIMITED (registered number 01003653) whose registered office is at Sea Containers, 19 Upper Ground, London SE1 9GL (the Company) (2) JOHN ROGERS (the Executive). IT IS AGREED as follows: 1. INTERPRETATION 1.1 In this Agreement: Appointment means the employment of the Executive by the Company on and subject to the terms of this Agreement; Board means the board of directors of the Company or any committee of the board duly appointed for the purpose in question, from time to time; Financial Year means the Company's financial year ending on 31 December each year; Group means the Company, any holding company of the Company, and any holding company of the holding company from time to time, together with any subsidiary of the Company or its holding company or the holding company of its holding company, and Group Company means any one of them; holding company and subsidiary shall, as the context so permits, have the meaning given by section 1159 of the Companies Act 2006 or under relevant applicable laws in Jersey; Recognised Investment Exchange means a relevant EEA market as defined in, or a market established under, the rules of any investment exchange specified in schedule 3 to the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005; Compensation Committee means the committee of non-executive directors as appointed by the Board of WPP plc from time to time for the purposes of determining the Company's policy on executive remuneration; Termination Date means the date on which the Appointment terminates for whatever reason; and UK Listing Authority means the FCA, acting in its capacity as the competent authority for the purposes of part VI of the Financial Services and Markets Act 2000. 1.2 A reference to a particular law is a reference to it as it is in force for the time being, taking account of any amendment, extension or re-enactment, and includes any subordinate legislation for the time being in force made under it. 1.3 The headings in this Agreement are for convenience only and do not affect its interpretation. 3 Table of Contents 2. COMMENCEMENT OF APPOINTMENT 2.1 The Appointment will begin on 27 January 2020 or such other date as the parties shall agree and when the Executive is not subject to any restrictions to prevent the commencement of his employment with the Company. There is no period of previous employment with the Company. 2.2 The Appointment may be terminated in accordance with clause 15 (or in furtherance of any right either party may have at common law). 3. EXECUTIVE'S DUTIES 3.1 The Executive shall serve the Company as Chief Financial Officer and as an Executive Director of WPP plc, and/or in such other capacity or capacities, within the Group as the Company may reasonably require from time to time, but subject always to it being consistent with his status, skills and experience. 3.2 During the Appointment the Executive shall: (a) diligently exercise such powers and perform such duties as may from time to time be assigned to him by the Board of WPP plc; (b) accept any offices or directorships as reasonably required by the Company; (c) use his best endeavours to promote, protect, develop and extend the business of the Company and any Group Company; (d) comply with all reasonable and lawful directions given to him by the Board of WPP plc; (e) comply with all policies and procedures of the Company and/or the Group. The Executive's attention is drawn, in particular, but without limitation, to the Company's data protection, anti-bribery and corruption and expenses policies and the WPP Code of Conduct; (f) comply with all requirements, recommendations or regulations of any regulatory authority
"""

Extract the exact clause related to "Agreement Date" from the excerpt above.

assistant: 1 October 2019