user: Question: Which circuit did Guy Edwards win?
Columns: ['Round', 'Name', 'Circuit', 'Date', 'Winning driver', 'Winning car']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Belgian Cup', 'Zolder', 'April 1', 'Dave Kennedy', 'Wolf WR4']
SQL:

assistant: SELECT "Circuit" FROM "Table" WHERE "Winning driver" = 'Guy Edwards';