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: Obama to Bernie Sanders: "You look like 37,000 donations of $27 each" #WHCD CNN Politics (@CNNPolitics) May 1, 2016 Question: which president made a comment to sanders? Answer: chairman of the senate armed services committee
Example Output: no

Example Input: Context: Today, nearly 200 countries took an historic step to #ActOnClimate for future generations by phasing down HFCs: The White House (@WhiteHouse) October 15, 2016 Question: nearly 200 countries took steps to do what? Answer: putin
Example Output: no

Example Input: Context: Bloody Sunday ?? What sort of justice is this, 1 soldier arrested 43 years after event?? Sounds like scapegoating to me— Martin O'Neill (@DrNostromo) November 10, 2015 Question: was that a descriptive day of the week? Answer: kelsey grammer
Example Output:
no