Teacher:Given a paragraph about movies and a set of conversational questions and answers about the paragraph, say whether the passage contains sufficient information to answer the follow-up question. Say Yes if it is answerable; otherwise, say No. The paragraph has the prefix 'CONTEXT:'. Each conversation question has a prefix `Q:` followed by the answer prefix `A:`, and the follow-up question has a prefix `FOLLOWUP_Q:`.
Teacher: Now, understand the problem? Solve this instance: CONTEXT: By the time of Infinity War, they could not have kept the Infinity Stones in Odin's Vault, because of the events in Ragnarok, which, by the end of the movie, left Odin dead and Asgard destroyed. The Asgardians wouldn't have kept the Infinity Stones in the Vault before Ragnarok either, because they knew that a cataclysmic event was coming, even if they didn't know when, so it would logically be safer to keep the stones away from Asgard. Finally, just as logical assumption, if you have a super-destructive device in six parts, it would make more sense to keep those parts as far away from each other as possible so that it would be more difficult for said weapon to fall in to the wrong hands. If they're all in one place, no matter how secure, that only makes it easier to collect all the parts. This is doubly true since Thanos is literally one of the strongest characters in the MCU at this point. Anyone who would have been powerful enough to stop him either (a) wouldn't care, or (b) have already been killed.  <sep>  Q: Why didn't the Asgardians aquire the Infinity stones using Heimdall? A: because they knew that a cataclysmic event was coming, even if they didn't know when, so it would logically be safer to keep the stones away from Asgard  <sep> FOLLOWUP_Q: What was the cataclysmic event?
Student:
Yes