user: Question: What is Jillian Evans highest number of seats?
Columns: ['Leader', 'Party', "Leader's Seat", 'Number of Seats', 'Leader since']
Types: ['text', 'text', 'text', 'real', 'text']
Sample row: ['Timothy Kirkhope', 'Conservative Party', 'Yorkshire and the Humber', 26.0, '2008']
SQL:

assistant: SELECT MAX("Number of Seats") FROM "Table" WHERE "Leader" = 'Jillian Evans';