user: Question: Which year did enrolled Gambier members leave?
Columns: ['Institution', 'Location (all in Ohio)', 'Nickname', 'Founded', 'Type', 'Enrollment', 'Joined', 'Left', 'Current Conference']
Types: ['text', 'text', 'text', 'real', 'text', 'text', 'real', 'real', 'text']
Sample row: ['Ashland University', 'Ashland', 'Eagles', 1878.0, 'Private/Brethren', '5,701', 1931.0, 1948.0, 'GLIAC (NCAA Division II)']
SQL:

assistant: SELECT "Left" FROM "Table" WHERE "Location (all in Ohio)" = 'Gambier';