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_1 (wins INTEGER, class VARCHAR, year VARCHAR)
### Question:
Count the average Wins which has a Class of 250cc, and a Year of 1972?
### Answer:
SELECT AVG(wins) FROM table_name_1 WHERE class = "250cc" AND year = 1972