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: "Today I was in a real zone," says #Petkovic. "I stepped up my game when I needed to. That gives me confidence" #RG14 Roland Garros (@rolandgarros) June 4, 2014 Question: who is steve lukather's brother? Answer: mike porcaro
[EX A]: no

[EX Q]: Context: >@cnn @cnnhealth because we are an obese nation, full of addicts to drugs and alcohol who only crave more. #didn'tneedtoreadit— NGSiegel (@NGSiegel) January 10, 2013 Question: what is the nation full of? Answer: addicts to drugs and alcohol
[EX A]: yes

[EX Q]: Context: This is Moose, who is waiting to join Prince George & Princess Charlotte at a kids' party in Victoria BC. Woof woof. Valentine Low (@valentinelow) September 29, 2016 Question: melania's husband wears what literally everywhere? Answer: a head cover
[EX A]:
no