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: Yay! Everyone is so wonderful and supportive of my shade! This might be a problem down the line. Thank you! #notmyjetthough #imnotthatfancy— Gabourey Sidibe (@GabbySidibe) January 14, 2014 Question: when might it be a problem? Answer: down the line

Ex Output:
yes


Ex Input:
Context: Nobody can deny @realDonaldTrump uncovered a 14 year long 9/11 cover-up re: celebrations on Jersey City rooftops. — Daniel Scavino Jr. (@DanScavino) December 2, 2015 Question: who uncovered a 14-year long 9/11 cover-up? Answer: donald trump

Ex Output:
yes


Ex Input:
Context: Before I enter any mall, I always scan for strange vehicles and emergency exits. I take keen interests on shoppers also. #Westgate6Months— Robert Alai (@RobertAlai) March 21, 2014 Question: what does robert take keen interests on? Answer: shoppers

Ex Output:

yes