user: Question: If the manufacturer is Yamaha, and the laps driven were under 32, what's the average of all grid sizes with that criteria?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Valentino Rossi', 'Yamaha', 32.0, '44:04.311', 2.0]
SQL:

assistant: SELECT AVG("Grid") FROM "Table" WHERE "Laps" < 32.0 AND "Manufacturer" = 'Yamaha';