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.

[EX 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
[EX A]: yes

[EX Q]: Context: This is key: @DrFriedenCDC says viral hemorrhagic fever has never been transmitted in the USA. Our health system can isolate. — Mark Leon Goldberg (@MarkLGoldberg) September 30, 2014 Question: did these people love this person? Answer: our hearts literally hurting
[EX A]: no

[EX Q]: Context: Well, that explains what happened to my iPad! RT @BillClinton: I'm following my leader! Hillary Clinton (@HillaryClinton) April 1, 2014 Question: who is hyllary's leader? Answer: bill clinton
[EX A]:
yes