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_1 ( engine VARCHAR, chassis VARCHAR, entrant VARCHAR )

### Question ###
What was the Engine, when the Chassis was Bugatti T51, and when the Entrant was a Private Entry?

### Accurate SQL ###

SELECT engine FROM table_name_1 WHERE chassis = "bugatti t51" AND entrant = "private entry"