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_21 ( engine VARCHAR, rank VARCHAR, entrant VARCHAR )

### Question ###
What engine what in the vehicle when adt champion racing ranked in 1st place?

### Accurate SQL ###

SELECT engine FROM table_name_21 WHERE rank = "1st" AND entrant = "adt champion racing"