user: Question: WHAT IS THE LOWEST GRID FOR retirement, AND LAPS LARGER THAN 17?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Manuel Poggiali', 'Aprilia', 19.0, '41:36.284', 23.0]
SQL:

assistant: SELECT MIN("Grid") FROM "Table" WHERE "Time/Retired" = 'retirement' AND "Laps" > 17.0;