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_79 ( circuit VARCHAR, winning_car VARCHAR, round VARCHAR )

### Question ###
What circuit had an ensign n180 as the winning car in round 5?

### Accurate SQL ###

SELECT circuit FROM table_name_79 WHERE winning_car = "ensign n180" AND round = 5