Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### 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"