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: Police form circular wall. Reports of flag burning planned outside convention. Firefighters on scene # Tolly Taylor (@TollyTaylor) July 20, 2016 Question: what is planned outside the convention? Answer: flag burning

Ex Output:
yes

Ex Input:
Context: Can't sleep Too busy worrying about the controllers strike. Would prefer not to spend my holiday in the Airport. #airtrafficstrike mafleen (@mafleen) June 25, 2014 Question: in what hospital is the msf team working? Answer: haradh hospital

Ex Output:
no

Ex Input:
Context: .@NicTaylorUSA proposed to @eamslider24 on the podium after she won silver at 2013 Worlds. Here he is cheering her on NBC Olympics (@NBCOlympics) February 20, 2014 Question: who did nictaylorusa cheering on at 2013 worlds? Answer: eamslider24

Ex Output:
yes