user: Question: What is the grid with a +6.8359 time/retired?
Columns: ['Fin. Pos', 'Car No.', 'Driver', 'Team', 'Laps', 'Time/Retired', 'Grid', 'Laps Led', 'Points']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1', '11', 'Tony Kanaan', 'Andretti Green', '225', '1:47:42.4393', '3', '25', '50']
SQL:

assistant: SELECT "Grid" FROM "Table" WHERE "Time/Retired" = '+6.8359';