Please answer the following question: The Dock Brief - The Dock Brief (US title Trial and Error) is a 1962 black-and-white British legal satire directed by James Hill starring Peter Sellers and Richard Attenborough and based on the play of the same name written by John Mortimer (creator of Horace Rumpole).Richard Attenborough was nominated for the 1963 BAFTA Award for best British Actor for his role. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Film