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: taylor.boards.net (@TSfanforum) November 15, 2017 Question: what time was this tweeted? Answer: 7:37 pm
[EX A]: yes

[EX Q]: Context: The llama chase reminds me of story when I worked in Columbus. Wayward llama was killed by hit and run driver. We called it the llamacide.— Steve Brusk (@stevebruskCNN) February 26, 2015 Question: which kind of animal was killed? Answer: a llama
[EX A]: yes

[EX Q]: Context: 200 people at #chicago Mayor Rahm Emanuel's office protesting police handling of black men. #ferguson #cnn billkirkos (@KirkosBill) November 25, 2014 Question: what should hov do if he wants people to sign up to tidal? Answer: upload the audio to the elevator fight
[EX A]:
no