Who was Purdue's opponent?
CREATE TABLE table_name_19 (opp_team VARCHAR, big_ten_team VARCHAR)
SELECT opp_team FROM table_name_19 WHERE big_ten_team = "purdue"
### Context: CREATE TABLE table_name_19 (opp_team VARCHAR, big_ten_team VARCHAR) ### Question: Who was Purdue's opponent? ### Answer: SELECT opp_team FROM table_name_19 WHERE big_ten_team = "purdue"