user: Question: What is the average number of laps for the driver Piero Taruffi?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Piero Taruffi', 'Ferrari', 62.0, '3:01:46.1', 2.0]
SQL:

assistant: SELECT AVG("Laps") FROM "Table" WHERE "Driver" = 'Piero Taruffi';