Question: What is the release year of this horror film produced and directed by Stanley Kubrick and Robert Sherwood Fryer?
Sentence (from "2001: A Space Odyssey (novel)"): The story is based in part on various short stories by Clarke, including The Sentinel (written in 1948 for a BBC competition, but first published in 1951 under the title "Sentinel of Eternity").
Relevant evidence: No