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 book_club (category VARCHAR, YEAR INTEGER)
### Question:
List categories that have at least two books after year 1989.
### Answer:
SELECT category FROM book_club WHERE YEAR > 1989 GROUP BY category HAVING COUNT(*) >= 2