user: Question: Who was the champion that drove the car with the Ford engine in 1971?
Columns: ['Season', 'Champion', 'Team', 'Chassis', 'Engine']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2013', 'Marvin Kirchhöfer', 'Lotus', 'Dallara F311', 'Volkswagen']
SQL:

assistant: SELECT "Champion" FROM "Table" WHERE "Engine" = 'Ford' AND "Season" = '1971';