user: Question: What position is associated with a Time of 20:39.171?
Columns: ['Pos.', 'Driver', 'Time', 'Best time', 'Points']
Types: ['real', 'text', 'text', 'text', 'real']
Sample row: [1.0, 'Sergey Mokshantcev', '21:19.329', '01:44.972', 21.0]
SQL:

assistant: SELECT "Pos." FROM "Table" WHERE "Time" = '20:39.171';