user: Question: How many laps for robin montgomerie-charrington, and a Grid smaller than 15?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Alberto Ascari', 'Ferrari', 36.0, '3:03:46.3', 1.0]
SQL:

assistant: SELECT "Laps" FROM "Table" WHERE "Driver" = 'robin montgomerie-charrington' AND "Grid" < 15.0;