How many wins did the 500cc class have in 1979?
CREATE TABLE table_name_20 (wins VARCHAR, class VARCHAR, year VARCHAR)
SELECT wins FROM table_name_20 WHERE class = "500cc" AND year = 1979
### Context: CREATE TABLE table_name_20 (wins VARCHAR, class VARCHAR, year VARCHAR) ### Question: How many wins did the 500cc class have in 1979? ### Answer: SELECT wins FROM table_name_20 WHERE class = "500cc" AND year = 1979