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: The guy in front of her just shouted at her. He's a true hero. — Ryan Case (@film114) September 29, 2014 Question: what did the guy do? Answer: shouted at her.
Example Output: yes

Example Input: Context: Much needed win for @TorontoRockLax, much unneeded acl tear for myself. Hope I see you in 2015. Good luck boys— Garrett Billings (@gbillings13) April 6, 2014 Question: who had a much needed win? Answer: zumyah
Example Output: no

Example Input: Context: Thnx Temperley 4 my beautiful dress! & thank you to my friend @JimVerraros & Maria Elena 4 the beautiful headpiece! Kelly Clarkson (@kelly_clarkson) October 21, 2013 Question: for what is jim verraros and maria elena being thanked for? Answer: the greenpeace uk protest.
Example Output:
no