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: Is Ebola a disease of #poverty? Read this @UNDP blog to find out: #EbolaResponse UN Geneva (@UNGeneva) December 4, 2014 Question: what disease are they tweeting about? Answer: ebola
Example Output: yes

Example Input: Context: Everyone calm down, Colbert just engaged in locker room talk..You were all fine with it up till now #FireColbert— The BryPie (@TheBryPie) May 3, 2017 Question: what did the brypie say everyone needs to do? Answer: calm down
Example Output: yes

Example Input: Context: @ChrisEvans OK. Seahawks win you fly yourself to Seattle, visit @seattlechildren hospital as Captain America, waving the 12th man flag.— chris pratt (@prattprattpratt) January 21, 2015 Question: what is he going to be waving? Answer: the 12th man flag
Example Output:
yes