What date was the race won by Louis Chiron?
CREATE TABLE table_name_81 (date VARCHAR, winning_drivers VARCHAR)
SELECT date FROM table_name_81 WHERE winning_drivers = "louis chiron"
### Context: CREATE TABLE table_name_81 (date VARCHAR, winning_drivers VARCHAR) ### Question: What date was the race won by Louis Chiron? ### Answer: SELECT date FROM table_name_81 WHERE winning_drivers = "louis chiron"