user: Question: Which manufacturer has a grid of 6?
Columns: ['Rider', 'Manufacturer', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Manuel Poggiali', 'Aprilia', '26', '42:14.305', '2']
SQL:

assistant: SELECT "Manufacturer" FROM "Table" WHERE "Grid" = '6';