user: Question: what is the time when the laps is less than 21 and the grid is more than 17?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Mika Kallio', 'KTM', 21.0, '48:12.217', 3.0]
SQL:

assistant: SELECT "Time" FROM "Table" WHERE "Laps" < 21.0 AND "Grid" > 17.0;