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.

Context: Kurt Helin @basketballtalkBrilliant dig: Knicks fans chant "Derek Fisher" as Kings' Matt Barnes inbounds ball , 4:18:07 AM Answer: derek fisher
what are the fans chanting?

Context: We regret the mistaken RTs from our account yesterday and look forward to continuing to share the beauty and history of our parks with you NationalParkService (@NatlParkService) January 21, 2017 Answer: rt's
what was mistaken in the account yesterday?

Context: The Roger Stone report on @CNN is false - Fake News. Have not spoken to Roger in a long time - had nothing to do with my decision. Donald J. Trump (@realDonaldTrump) May 10, 2017 Answer: donald j trump
who is calling roger stone report fake news?