Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
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?
### Answer:
SELECT set_3 FROM table_name_54 WHERE set_5 = "na" AND set_1 = "21-25" AND set_2 = "25-16"