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.

Q: Context: 20 years ago today we lost the greatest rapper of all time, The Notorious B.I.G. # Sean Diddy Combs (@diddy) March 9, 2017 Answer: the notorious big

A: according to diddy who was the greatest rapper of all time?
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Q: Context: NTSB Has secured outward-facing video from the SEPTA train in question and will be reviewing radio transmissions. #Amtrak NTSB (@NTSB) May 15, 2015 Answer: outward facing video from the septa train

A: what does ntsb have in their possession?
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Q: Context: me seeing Rob Kardashian expose Blac Chyna right now Nicole Madrid (@nicolemadridd) July 5, 2017 Answer: rob kardashian

A:
who is blac chyna being exposed by?
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