TASK DEFINITION: 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.
PROBLEM: Context: Sad to lose Nola @sandiegozoo Now only 3 northern white rhinos remain on our planet. #Nola4Ever #anthropocene. Edward Burtynsky (@edwardburtynsky) November 23, 2015 Answer: three

SOLUTION: how many northern white rhinos remain in existence?

PROBLEM: Context: In 1979 Iranians experienced a revolution without democracy; today they aspire for democracy without a revolution— Karim Sadjadpour (@ksadjadpour) December 29, 2017 Answer: democracy

SOLUTION: what do the iranians aspire for today?

PROBLEM: Context: Ummmmmm #MariahCarey maybe u should not have missed that sound check... 🙉 #RockCenterXMAS— Shel Burks (@shelburks) December 4, 2014 Answer: a sound check

SOLUTION:
what did mariah carey miss?