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_42 (wins INTEGER, class VARCHAR, year VARCHAR)
### Question:
Name the Wins which has a Class of 350cc, and a Year smaller than 1973?
### Answer:
SELECT SUM(wins) FROM table_name_42 WHERE class = "350cc" AND year < 1973