user: Question: How many laps were there when the start was 12?
Columns: ['Year', 'Start', 'Qual', 'Rank', 'Finish', 'Laps']
Types: ['text', 'text', 'text', 'text', 'text', 'real']
Sample row: ['1954', '12', '138.084', '24', '21', 181.0]
SQL:

assistant: SELECT SUM("Laps") FROM "Table" WHERE "Start" = '12';