In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify this question-answer pair into two categories: (1) "yes" if the given answer is right for question, and (2) "no" if the given answer is wrong for question.

[EX Q]: Context: Tim Cahill hammers #AUS level against the #NED in Porto Alegre. The best goal of #Brazil2014? #CNNWorldCup CNN Football Club (@CNNFC) June 18, 2014 Question: which soccer team does tim cahill play on? Answer: @marcmarquez93
[EX A]: no

[EX Q]: Context: Pumped to be racing again... Happy with the time tonight right where I wanted to be!!— Michael Phelps (@MichaelPhelps) April 25, 2014 Question: who is pumped to be racing? Answer: the world and herself
[EX A]: no

[EX Q]: Context: How might America's top commander in Afghanistan Ret. Gen. @StanMcChrystal fight #ISIS? Find out tonight 7pE on @CNN. — OutFrontCNN (@OutFrontCNN) September 12, 2014 Question: what channel is the show on? Answer: cnn
[EX A]:
yes