user: Question: When did Jacques Chirac stop being a G8 leader?
Columns: ['Entered office as Head of State or Government', 'Began time as senior G8 leader', 'Ended time as senior G8 leader', 'Person', 'Office']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['16 October 1964', '15 November 1975', '5 April 1976', 'Harold Wilson', 'Prime Minister of the United Kingdom']
SQL:

assistant: SELECT "Ended time as senior G8 leader" FROM "Table" WHERE "Person" = 'Jacques Chirac';