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: Following Monday's Russian #doping allegations, do you still have trust in track and field?— CNN Sport (@cnnsport) November 10, 2015 Question: how many hours was the lucky woman stuck in the 5th floor building? Answer: 36 hours
[EX A]: no

[EX Q]: Context: You don't have to search hard to figure out why #GoogleGlass is being retooled: Adweek (@Adweek) January 16, 2015 Question: how long was he friends with kesha? Answer: for many years.
[EX A]: no

[EX Q]: Context: Maturity, grace and oh boy, is she going high when they went low. shonda rhimes (@shondarhimes) January 20, 2017 Question: who is she talking about? Answer: hillary clinton
[EX A]:
yes