user: Question: What are grid 4's average points?
Columns: ['Driver', 'Team', 'Laps', 'Time/Retired', 'Grid', 'Points']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['Patrick Carpentier', 'Forsythe Racing', 79.0, '1:45:51.116', 2.0, 33.0]
SQL:

assistant: SELECT AVG("Points") FROM "Table" WHERE "Grid" = 4.0;