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 Input:
Context: Cheers to @Letterman. A king, a king-maker, and probably the man most to blame for inflicting me on America. See you soon.— Ricky Gervais (@rickygervais) April 3, 2014 Question: who sent michelle obama a letter? Answer: beyonce

Ex Output:
no


Ex Input:
Context: Many people are equating BREXIT, and what is going on in Great Britain, with what is happening in the U.S. People want their country back!— Donald J. Trump (@realDonaldTrump) June 24, 2016 Question: who is presenting this clip? Answer: tom hiddleston

Ex Output:
no


Ex Input:
Context: It's a hard time for me right now.Thanks for all the sweet messages!Happy I support Liverpool right now because I know I'll never walk alone— Caroline Wozniacki (@CaroWozniacki) May 22, 2014 Question: who is having a bad time? Answer: caroline wozniacki

Ex Output:

yes