CREATE TABLE film (film_id NUMBER, title CLOB, studio CLOB, director CLOB, gross_in_dollar NUMBER)
CREATE TABLE film_market_estimation (estimation_id NUMBER, low_estimate NUMBER, high_estimate NUMBER, film_id NUMBER, type CLOB, market_id NUMBER, year NUMBER)
CREATE TABLE market (market_id NUMBER, country CLOB, number_cities NUMBER)

List the title of films that do not have any market estimation.
SELECT title FROM film WHERE NOT film_id IN (SELECT film_id FROM film_market_estimation)
SELECT "title" FROM "film" WHERE NOT "film_id" IN (SELECT "film_id" FROM "film_market_estimation")