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: Happy Birthday Nelson Mandela. You teach us tolerance, forgiveness and simple kindness. #Saint Kim Engelbrecht (@kimengelbrecht) July 18, 2012 Question: whose's birthday is it? Answer: nelson mandela
[EX A]: yes

[EX Q]: Context: re: the apology from Evans and Renner, to quote the one and only @MegaMaraMon "Renner sounds like he's rolling his eyes" He does indeed. Maria W. Norris (@MariaWNorris) April 23, 2015 Question: what did the people in the tweet speak about? Answer: the protests and media
[EX A]: no

[EX Q]: Context: Why in this day in age do we rely on the physical recovery of black boxes? Flight data should be continuously streamed to the cloud #8501qs Jacob Rossi (@jacobrossi) December 29, 2014 Question: who had to break through the ice in lake michigan Answer: cutter hollyhock
[EX A]:
no