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_54 (set_3 VARCHAR, set_2 VARCHAR, set_5 VARCHAR, set_1 VARCHAR)

### Question ###
What is set 3 when set 5 is na, set 1 is 21-25, and set 2 is 25-16?

### Accurate SQL ###

SELECT set_3 FROM table_name_54 WHERE set_5 = "na" AND set_1 = "21-25" AND set_2 = "25-16"