user: Question: What is the average number of laps for grid 8?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Ralf Schumacher', 'Williams - BMW', 56.0, '1:34:12.912', 4.0]
SQL:

assistant: SELECT AVG("Laps") FROM "Table" WHERE "Grid" = 8.0;