user: Question: The rider mike di meglio had a total of how many grids?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Mattia Pasini', 'Aprilia', 25.0, '41:49.049', 1.0]
SQL:

assistant: SELECT SUM("Grid") FROM "Table" WHERE "Rider" = 'mike di meglio';