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.

Example Input: Context: Happy Birthday Nelson Mandela. You teach us tolerance, forgiveness and simple kindness. #Saint— Kim Engelbrecht (@kimengelbrecht) July 18, 2012 Question: what does nelson mandela teaches us? Answer: inclusiveness
Example Output: no

Example Input: Context: Throughout #HongKong, volunteers hand food, water, towels to protesters. They recycle too. Madison Park, 메디썬 박 (@MadisonCNN) September 29, 2014 Question: where did volunteers hand food, water and towels to protesters. Answer: ghastly
Example Output: no

Example Input: Context: Worth saying again: it is DRY dry out here. Lots of fields like this. Plowing the dust. #endangeredriver #cadrought John D. Sutter (@jdsutter) June 19, 2014 Question: what state is john stutter talking about? Answer: california
Example Output:
yes