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: Hey everybody, thanks for your concern. We're all safe & doing well in the Russian segment. Follow @Nasa for updates on @Space_Station today— Sam Cristoforetti (@AstroSamantha) January 14, 2015 Question: who balked on conditions? Answer: munchak

Ex Output:
no


Ex Input:
Context: The safety of Arizonans is our number one priority. If you have ANY information about the I-10 shootings call @Arizona_DPS at 602-644-5805— Doug Ducey (@dougducey) September 10, 2015 Question: who are the uf fans? Answer: niece & nephew

Ex Output:
no


Ex Input:
Context: both countries will, perhaps, work together to solve some of the many great and pressing problems and issues of the WORLD!— Donald J. Trump (@realDonaldTrump) January 7, 2017 Question: who is being referred to in the tweet? Answer: benedict cumberbatch

Ex Output:

no