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_13 (us_ac VARCHAR, year VARCHAR)
### Question:
What is the US A.C. in 1974?
### Answer:
SELECT us_ac FROM table_name_13 WHERE year = 1974