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: Yellowstone River closed to ALL recreation in response to ongoing fish kill: Montana FWP (@MontanaFWP) August 19, 2016 Question: what river was closed? Answer: possibly, next weekend.
[EX A]: no

[EX Q]: Context: The #KayoolaSolarBus has just arrived at Kampala Serena ahead of its launch on Tuesday. Kiira Motors (@KiiraMotors) February 14, 2016 Question: where did the bus arrive? Answer: kampala serena
[EX A]: yes

[EX Q]: Context: GER Special Representative #Lindner exchanged with #Bono in Berlin about the fight against #Ebola today. @ONECampaign GermanForeignOffice (@GermanyDiplo) November 12, 2014 Question: who is the ger special representative? Answer: lidner
[EX A]:
yes