In this task, you are given a context tweet and an answer. Your job is to generate a question for the given answer based on the given tweet paragraph. Note that your question should be answerable based on the given tweet, and the answer to your question should be the given answer.

[EX Q]: Context: #IWishMyTeacherKnew how to do a backflip. Ss challenging me to learn new things. It's exciting! #ChallengeAccepted Cassie Norsworthy (@mrsnorsworthy) April 17, 2015 Answer: how to do a back flip.
[EX A]: what type of challenge was accepted?

[EX Q]: Context: It's party time, @katyperry! With 90 million on the guest list, we're gonna need a really big dance floor. ❤️ Twitter (@twitter) July 1, 2016 Answer: 90 million
[EX A]: how long is the guest list?

[EX Q]: Context: Chip: "We didn't coach well. we didn't do anything well." Reuben Frank (@RoobCSN) November 26, 2015 Answer: reuben frank
[EX A]:
who was the author of the tweet?