user: Question: Which Circuit did Johnny Wakefield win?
Columns: ['Name', 'Circuit', 'Date', 'Winning driver', 'Winning constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Pau Grand Prix', 'Pau', '10 April', 'René Dreyfus', 'Delahaye', 'Report']
SQL:

assistant: SELECT "Circuit" FROM "Table" WHERE "Winning driver" = 'Johnny Wakefield';