user: Question: What is the time/retired for Jo Siffert with a grid under 11?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Jackie Stewart', 'Matra - Ford', 90.0, '2:16:54.0', 4.0]
SQL:

assistant: SELECT "Time/Retired" FROM "Table" WHERE "Grid" < 11.0 AND "Driver" = 'Jo Siffert';