CREATE TABLE cinema (cinema_id DECIMAL, name TEXT, openning_year DECIMAL, capacity DECIMAL, location TEXT)
CREATE TABLE schedule (cinema_id DECIMAL, film_id DECIMAL, date TEXT, show_times_per_day DECIMAL, price DECIMAL)
CREATE TABLE film (film_id DECIMAL, rank_in_series DECIMAL, number_in_season DECIMAL, title TEXT, directed_by TEXT, original_air_date TEXT, production_code TEXT)

Show all the locations where no cinema has capacity over 800.
SELECT location FROM cinema EXCEPT SELECT location FROM cinema WHERE capacity > 800
SELECT "location" FROM "cinema" EXCEPT SELECT "location" FROM "cinema" WHERE "capacity" > 800