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_56878 ( "Race" text, "Circuit" text, "Date" text, "Pole position" text, "Fastest lap" text, "Winning driver" text, "Constructor" text, "Tyre" text, "Report" text )

### Question ###
Name the circuit when the fastest lap was john surtees and the winning driver was john surtees.

### Accurate SQL ###

SELECT "Circuit" FROM table_56878 WHERE "Fastest lap" = 'john surtees' AND "Winning driver" = 'john surtees'