user: Question: Who was Kraco Twin 125 (R2)'s Winning Driver?
Columns: ['Name', 'Pole Position', 'Fastest Lap', 'Winning driver', 'Winning team', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Kraco Car Stereo 200', 'Bobby Unser', 'Unknown', 'Johnny Rutherford', 'Chaparral', 'Report']
SQL:

assistant: SELECT "Winning driver" FROM "Table" WHERE "Name" = 'Kraco Twin 125 (R2)';