user: Question: What are the average Laps for the time/retired of +16.874 secs, and a grid less than 5?
Columns: ['Driver', 'Team', 'Laps', 'Time/Retired', 'Grid', 'Points']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['Bruno Junqueira', 'Newman/Haas Racing', 69.0, '1:39:12.432', 4.0, 32.0]
SQL:

assistant: SELECT AVG("Laps") FROM "Table" WHERE "Time/Retired" = '+16.874 secs' AND "Grid" < 5.0;