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: from PR, Kobani is the real Benghazi, the beseiged fortress where president really can & must save heroic defenders Geraldo Rivera (@GeraldoRivera) October 11, 2014 Answer: the besieged fortress
[EX A]: where must the president save heroic defenders?

[EX Q]: Context: One of the uncomfortable things I learned on my trip down the #endangeredriver. Irrigation caused this in the 1980s. John D. Sutter (@jdsutter) July 22, 2014 Answer: irrigation issues of the endangered river
[EX A]: what disaster happened in the 1980s?

[EX Q]: Context: Police react in aftermath of explosion #bostonmarathon #boylstonst (John Tlumacki photo) — Boston Globe Sports (@BGlobeSports) April 15, 2013 Answer: boston
[EX A]:
where did the explosion take place?