what is the date when the opponent# is iowa?
CREATE TABLE table_name_42 (date VARCHAR, opponent_number VARCHAR)
SELECT date FROM table_name_42 WHERE opponent_number = "iowa"
### Context: CREATE TABLE table_name_42 (date VARCHAR, opponent_number VARCHAR) ### Question: what is the date when the opponent# is iowa? ### Answer: SELECT date FROM table_name_42 WHERE opponent_number = "iowa"