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 (wins INTEGER, year VARCHAR, class VARCHAR)
### Question:
Which Wins have a Year of 1963, and a Class of 50cc?
### Answer:
SELECT AVG(wins) FROM table_name_54 WHERE year = 1963 AND class = "50cc"