user: Question: What was the grid when the driver was Mark Webber?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Lewis Hamilton', 'McLaren - Mercedes', '67', '1:31:20.874', '1']
SQL:

assistant: SELECT "Grid" FROM "Table" WHERE "Driver" = 'Mark Webber';