user: Question: What Circuit has a Winning constructor of Bugatti, and a Winning driver of Edward Bret?
Columns: ['Name', 'Circuit', 'Date', 'Winning driver', 'Winning constructor', 'Report']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Tripoli Grand Prix', 'Tripoli', '24 March', 'Gastone Brilli-Peri', 'Talbot', 'Report']
SQL:

assistant: SELECT "Circuit" FROM "Table" WHERE "Winning constructor" = 'Bugatti' AND "Winning driver" = 'Edward Bret';