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: Katy Perry rocking the Wii safety strap during the halftime show. #SuperBowl Funny Or Die (@funnyordie) February 2, 2015 Question: who was wearing a safety strap? Answer: katy perry
[EX A]: yes

[EX Q]: Context: "9 killed in Waco biker gang shootout - where are the white leaders decrying this white-on-white violence?" #stuffthemedianeversays — John Fugelsang (@JohnFugelsang) May 18, 2015 Question: how many were killed? Answer: 9
[EX A]: yes

[EX Q]: Context: That sound was a controlled explosion by law enforcement. Please avoid reporting inaccuracies at this time.— Orlando Police (@OrlandoPolice) June 12, 2016 Question: who done the explosion on june 12 .2016? Answer: oliversacks
[EX A]:
no