What is the date of the 1500m freestyle event?
CREATE TABLE table_name_91 (date VARCHAR, event VARCHAR)
SELECT date FROM table_name_91 WHERE event = "1500m freestyle"
### Context: CREATE TABLE table_name_91 (date VARCHAR, event VARCHAR) ### Question: What is the date of the 1500m freestyle event? ### Answer: SELECT date FROM table_name_91 WHERE event = "1500m freestyle"