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: Scary moment we #CHI fans just broke down a barrier and stormed stadium. Sam Laird (@samcmlaird) June 18, 2014 Answer: barrier

SOLUTION: what did they break in order to get to the stadium?

PROBLEM: Context: Voted early today. Make sure you vote too: President Obama (@POTUS) October 7, 2016 Answer: president obama

SOLUTION: who voted earlier today?

PROBLEM: Context: The 'Batgirl' variant cover that got pulled...which means, of course, this image will live forever, seen by millions. Blake Northcott (@ComicBookGrrl) March 17, 2015 Answer: the batgirl variant cover

SOLUTION:
which cover got pulled?