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: When your friend go dancing with strangers at the club and u just don't know what to do # Triyonce (@tribranchvo) February 5, 2018 Question: what did katy perry do in a living room? Answer: help deliver babies
[EX A]: no

[EX Q]: Context: Katy Perry rocking the Wii safety strap during the halftime show. #SuperBowl Funny Or Die (@funnyordie) February 2, 2015 Question: who was wearing a safety strap? Answer: katy perry
[EX A]: yes

[EX Q]: Context: I am declaring a statewide emergency for areas impacted by today's severe rainfall and flooding. #TurnAroundDontDrown #azwx Jan Brewer (@GovBrewer) September 8, 2014 Question: when will the rehearsal be great? Answer: after sort out of the audio levels
[EX A]:
no