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 Input:
Context: @_mariareza @mizraimbelman no selfie The secret service was watching our every move— Juan Belman (@juanbelman) July 11, 2014 Question: who was watching juan belman? Answer: secret service

Ex Output:
yes


Ex Input:
Context: 9 yr old Jacobeth needs urgent med-evac for operation, hurt by falling roof which killed her mother,brother #Vanuatu Ivan Watson (@IvanCNN) March 17, 2015 Question: how did 9 year old jacobeth get hurt? Answer: the effort of firefighters

Ex Output:
no


Ex Input:
Context: This is a good tale of elitism and privilege. Thanks Ben Edelman. Josh Sternberg (@joshsternberg) December 9, 2014 Question: josh sternberg thanked whom for his work? Answer: ben edelman

Ex Output:

yes