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: AP NFL @AP_NFLPatriots backup QBs played key role in Super Bowl run @khightower #SB51 , 7:33:06 PM Question: who played a key role in patriots super bowl run? Answer: backup qbs

Ex Output:
yes


Ex Input:
Context: UPDATE: The #Dignity1 and #Argos are on the way to the #SAR zone whilst the #Aquarius heads to restock in #Trapani. MSF Sea (@MSF_Sea) May 27, 2016 Question: what are on their was to the sar zone? Answer: dignity1 and argos

Ex Output:
yes


Ex Input:
Context: Is Katy mounted on a Transformer?— Simone S. Oliver (@SimoneSOliver) February 2, 2015 Question: what is katy mounted on? Answer: senate

Ex Output:

no