user: Question: With a Grid less than 15, and a Time of +52.833, what is the highest number of Laps?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Casey Stoner', 'Ducati', 30.0, '46:46.114', 1.0]
SQL:

assistant: SELECT MAX("Laps") FROM "Table" WHERE "Grid" < 15.0 AND "Time" = '+52.833';