You are given an open-domain question from an open movie database. Your task is to provide an answer to that question. Try to only include the answer. Do not put it in a sentence.

[Q]: what films did William Hopper star in?
[A]: 20 Million Miles to Earth, The Deadly Mantis


[Q]: who acted in the movie Impulse?
[A]: Tim Matheson, Hume Cronyn, Meg Tilly, John Karlen


[Q]: what was the release year of The Deer Hunter?
[A]:
1978