user: Question: Who was the driver in round 4?
Columns: ['Round', 'Race', 'Pole position', 'Fastest lap', 'Most laps led', 'Driver', 'Team', 'Manufacturer', 'Report']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'St. Petersburg', 'Will Power', 'Will Power', 'Scott Dixon', 'Hélio Castroneves', 'Team Penske', 'Chevrolet', 'Report']
SQL:

assistant: SELECT "Driver" FROM "Table" WHERE "Round" = 4.0;