user: Question: Name the most performances for Geoffrey Fitton
Columns: ['Opening date', 'Closing date', 'Performances', 'Role', 'Theatre']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Mar 10, 1959', 'Jan 30, 1960', 375.0, 'Tom Junior - Replacement', 'Martin Beck Theatre']
SQL:

assistant: SELECT MAX("Performances") FROM "Table" WHERE "Role" = 'Geoffrey Fitton';