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: President of Ukraine NOC @sergey_bubka can't believes scenes in Kiev Confirms Bogdana Matsotska & father return home Amanda Davies (@AmandaJDavies) February 20, 2014 Answer: scenes in kiev
A:
what can't @sergey_bubka believe?