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_67 ( circuit VARCHAR, winning_team VARCHAR, fastest_lap VARCHAR )

### Question ###
What circuit did marlboro team penske win with an unknown fastest lap?

### Accurate SQL ###

SELECT circuit FROM table_name_67 WHERE winning_team = "marlboro team penske" AND fastest_lap = "unknown"