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.

Context: Sigh. Because I'm still having to use the block button for hateful messages. #YesAllWomen— Amber Naslund (@AmberCadabra) May 26, 2014 Question: what is amber using to stop hateful messages Answer: the block button
yes

Context: Dearest Containment fans, we made 13 wonderful episodes of a powerful story. We'll make more if someone asks us, but in the meantime, enjoy!— julieplec (@julieplec) May 12, 2016 Question: what percentage of flights is canceled? Answer: 30 percent.
no

Context: #8501QS if primary radar was tracking plane then why do we not know where missing aircraft went below radar altitude?— Thomas Dehel (@TDEHEL) December 28, 2014 Question: who won't ever use 280 characters? Answer: christine teigen

no