Please answer the following question: The Fourth Estate: A Film of a British Newspaper is a 1940 documentary film directed by Paul Rotha. The film was sponsored by the owners of The Times and depicts the preparation and production of a day's edition of the newspaper.The film is notable for the fact that it went unreleased (apart from a small number of private screenings for the sponsor and critics). Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
A:
Film