user: Question: What team has a grid of 15?
Columns: ['Driver', 'Team', 'Laps', 'Time/Retired', 'Grid', 'Points']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['Bruno Junqueira', 'Newman/Haas Racing', 69.0, '1:39:12.432', 4.0, 32.0]
SQL:

assistant: SELECT "Team" FROM "Table" WHERE "Grid" = 15.0;