user: Question: How many laps for denny hulme with under 4 on the grid?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Denny Hulme', 'McLaren - Ford', 65.0, '1:54:08.80', 4.0]
SQL:

assistant: SELECT SUM("Laps") FROM "Table" WHERE "Driver" = 'denny hulme' AND "Grid" < 4.0;