CREATE TABLE culture_company (company_name CLOB, type CLOB, incorporated_in CLOB, group_equity_shareholding NUMBER, book_club_id CLOB, movie_id CLOB)
CREATE TABLE book_club (book_club_id NUMBER, year NUMBER, author_or_editor CLOB, book_title CLOB, publisher CLOB, category CLOB, result CLOB)
CREATE TABLE movie (movie_id NUMBER, title CLOB, year NUMBER, director CLOB, budget_million NUMBER, gross_worldwide NUMBER)

What categories have two or more corresponding books that were made after 1989?
SELECT category FROM book_club WHERE year > 1989 GROUP BY category HAVING COUNT(*) >= 2
SELECT "category" FROM "book_club" WHERE "year" > 1989 GROUP BY "category" HAVING COUNT(*) >= 2