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: Joe Biden's son ousted from the Navy for cocaine? If the son is like the father, that's a scary thought: think of Joe Biden. Now add cocaine— Bill Maher (@billmaher) October 18, 2014 Question: what branch of military was joe biden's son in? Answer: navy
[EX A]: yes

[EX Q]: Context: Transgender people deserve respect, safety, and equal treatment everywhere. Good move by @TSA. Hillary Clinton (@HillaryClinton) October 16, 2015 Question: what is being saved due to the negotiation in syria? Answer: lives will be saved
[EX A]: no

[EX Q]: Context: I am so happy to be in the @usopen finals again after 5 years and I wish Peng a speedy recovery!— Caroline Wozniacki (@CaroWozniacki) September 5, 2014 Question: how long has the tweeter been waiting to return to the finals? Answer: 5 years
[EX A]:
yes