user: Question: What is the Grid for Rubens Barrichello?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Lewis Hamilton', 'McLaren - Mercedes', '56', '1:31:57.403', '1']
SQL:

assistant: SELECT "Grid" FROM "Table" WHERE "Driver" = 'Rubens Barrichello';