user: Question: What is the smallest grid for a time/retired of 1:56:18.22?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Emerson Fittipaldi', 'Lotus - Ford', 96.0, '1:56:18.22', 2.0]
SQL:

assistant: SELECT MIN("Grid") FROM "Table" WHERE "Time/Retired" = '1:56:18.22';