In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify given passage into two categories: (1) "yes" if the given context is useful in answering the question, and (2) "no" if the given context is not useful.

[Q]: Context: Don't even know what to say. To be in Vegas while this is happening, brings a pain to my heart. My team and I are safe Thank God! Prayers up— Trey Songz (@TreySongz) October 2, 2017 Question: what did songz say after he thanked god? Answer: that his team and him were safe
[A]: yes


[Q]: Context: We can't destroy the competitiveness of our factories in order to prepare for nonexistent global warming. China is thrilled with us!— Donald J. Trump (@realDonaldTrump) November 5, 2012 Question: who is thrilled with us? Answer: china
[A]: yes


[Q]: Context: FourFourTwo ⚽️ @FourFourTwoThe Alexis Sanchez Challenge | Soccer training drill: via @YouTube2/12/2017, 8:00:29 AM Question: who is hosting the challenge? Answer: alexis sanchez
[A]:
yes