Given a paragraph about movies, and a set of conversational question answers about the paragraph, generate a relevant question to the topic of the paragraph. The paragraph has the prefix 'CONTEXT:'. Each conversation question has a prefix `Q:` followed by the answer prefix `A:`.

CONTEXT: David was of great historical interest to the future A.I.s, since he had actual memories of human beings, who are apparently long extinct by their time. Beyond that, he was actually built by humans, where they are undoubtedly built by other A.I.s. Studying him would help them understand their own past. They wanted to preserve him, and although they are not organic, seem to have a morality which prevents them from simply taking him apart or locking him in a cage.  <sep>  Q: Why was David's happiness so important to the Mecha descendants? A: he had actual memories of human beings, who are apparently long extinct by their time 
What movie was this event in?