user: Question: What was the lowest Attendance when the Opponent was Maryland?
Columns: ['Date', 'Opponent', 'Location', 'Result', 'Attendance']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['09/05/1981', 'South Carolina', 'Groves Stadium • Winston-Salem, NC', 'L 6-23', 29300.0]
SQL:

assistant: SELECT MIN("Attendance") FROM "Table" WHERE "Opponent" = 'Maryland';