Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_name_20 ( circuit VARCHAR, winning_constructor VARCHAR, winning_driver VARCHAR )

### Question ###
What Circuit has a Winning constructor of bugatti, and a Winning driver of edward bret?

### Accurate SQL ###

SELECT circuit FROM table_name_20 WHERE winning_constructor = "bugatti" AND winning_driver = "edward bret"