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: Today there were terror attacks in Turkey, Switzerland and Germany - and it is only getting worse. The civilized world must change thinking!— Donald J. Trump (@realDonaldTrump) December 19, 2016 Question: what must the civilized world do according to trump? Answer: change thinking
[EX A]: yes

[EX Q]: Context: God show her the way because the devil's tryna break her down. #YeezySeason4 Someone actually (@imanilindsay) September 7, 2016 Question: what is the devil trying to do? Answer: his brother.
[EX A]: no

[EX Q]: Context: Welcome to Chelsea, @Cuadrado! #CFC Chelsea FC (@ChelseaFC) February 2, 2015 Question: who is greeting you to chelsea? Answer: chelsea fc is greeting you.
[EX A]:
yes