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 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

Ex Output:
yes


Ex Input:
Context: #CHILE fans break through security checkpoint & storm into stadium via pressroom #Chile VS #Spain #worldcup2014— Gustavo (@gustavocnn) June 18, 2014 Question: what do fans do at this worldcup? Answer: portability

Ex Output:
no


Ex Input:
Context: How pathetic for @realdonaldtrump to criticize the president for 9/11. We were attacked & my brother kept us safe.— Jeb Bush (@JebBush) October 16, 2015 Question: what historical date is mentioned in the tweet? Answer: 9/11.

Ex Output:

yes