user: Question: What's the smallest grid for Time/Retired of +22.687?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Lukáš Pešek', 'Derbi', 23.0, '38:03.020', 3.0]
SQL:

assistant: SELECT MIN("Grid") FROM "Table" WHERE "Time/Retired" = '+22.687';