user: Question: Which Capacity has a Class of CM22, and a Vehicle of 1999 Subaru Impreza WRX STi?
Columns: ['Driver', 'Navigator', 'Vehicle', 'Class', 'Capacity', 'Total Time', 'Margin']
Types: ['text', 'text', 'text', 'text', 'real', 'text', 'text']
Sample row: ['Bradford', 'Huggins', '1999 Subaru Impreza WRX STi', 'CM22', 3400.0, '07:00', '00:00']
SQL:

assistant: SELECT "Capacity" FROM "Table" WHERE "Class" = 'CM22' AND "Vehicle" = '1999 Subaru Impreza WRX STi';