user: Question: When was the first year when Fowler joined?
Columns: ['School', 'Location', 'Mascot', '# / County', 'Year Joined', 'Year Left', 'Conference Joined']
Types: ['text', 'text', 'text', 'text', 'real', 'real', 'text']
Sample row: ['Brook', 'Brook', 'Aces', '56 Newton', 1955.0, 1966.0, 'none (consolidated into South Newton )']
SQL:

assistant: SELECT MIN("Year Left") FROM "Table" WHERE "Location" = 'Fowler';