user: Question: How many grids for peter collins?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Alberto Ascari', 'Ferrari', 77.0, '3:00:00', 1.0]
SQL:

assistant: SELECT COUNT("Grid") FROM "Table" WHERE "Driver" = 'peter collins';