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: .@luis16suarez It's all forgotten. I hope FIFA will reduce your suspension.— Giorgio Chiellini (@chiellini) June 30, 2014 Question: which organization will lower suspension? Answer: fifa

Ex Output:
yes


Ex Input:
Context: Watch a short video message from our Program Manager in Arkansas. #tornado #arwx Samaritan's Purse (@SamaritansPurse) April 29, 2014 Question: wharf is samaritan' s purse? Answer: a charity organization.

Ex Output:
yes


Ex Input:
Context: Pharrell a vampire 2pashk (@pashklleshaj) February 17, 2014 Question: why would pharrell be considered a vampire? Answer: face doesn't change

Ex Output:

yes