Task: Question Answering
Input (English): Context : The Quatermass Xperiment (US title: The Creeping Unknown) is a 1955 British science fiction horror film from Hammer Film Productions, based on the 1953 BBC Television serial The Quatermass Experiment written by Nigel Kneale. 
Question : The production company responsible for The Quatermass Xperiment is what?
Output (English): Hammer Film Productions