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: 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

Ex Output:
no

Ex Input:
Context: what people expect their pictures to look like tonight vs what they will look like #SuperBloodMoon So Damn True! (@SayingForFemale) September 28, 2015 Question: how often does this happen Answer: 150 years ago

Ex Output:
yes

Ex Input:
Context: Robert Kraft says he expects an apology from the NFL if investigation does not "definitively determine" the Patriots tampered w/footballs Rachel Nichols (@Rachel__Nichols) January 27, 2015 Question: what does robert kraft expect if the nfl fails to conclude the patriots tampered with the footballs? Answer: an apology

Ex Output:
yes