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_97 (opponent VARCHAR, date VARCHAR)
### Question:
What team was the opponent on 1990-10-21?
### Answer:
SELECT opponent FROM table_name_97 WHERE date = "1990-10-21"