user: Question: What is the minimum enrollment for Plainfield?
Columns: ['School', 'Location(s)', 'Control', 'Type', 'Enrollment (2009)', 'Founded']
Types: ['text', 'text', 'text', 'text', 'real', 'real']
Sample row: ['Bennington College', 'Bennington', 'Private', 'Baccalaureate college', 857.0, 1932.0]
SQL:

assistant: SELECT MIN("Enrollment (2009)") FROM "Table" WHERE "Location(s)" = 'Plainfield';