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: #Aleppo : As Russia abuses its veto at the #UNSC - we must work to hold to account those participating in potential war crimes. Tobias Ellwood MP (@Tobias_Ellwood) December 14, 2016 Question: where are war crimes suspected to have taken place? Answer: aleppo

Ex Output:
yes


Ex Input:
Context: I wonder how @selenagomez feels about this. What an incredibly ignorant analogy to make @lorde. Stephanie Marie (@stefinitely85) June 19, 2017 Question: who does stephanie wonder how she feels about it? Answer: @selenagomez

Ex Output:
yes


Ex Input:
Context: BratislavaSummit starts to bear fruit: All MS greenlight early EU ratification of #ParisAgreement. What some believed impossible is now real— Donald Tusk (@eucopresident) September 30, 2016 Question: what continent is this tweet most about? Answer: europe

Ex Output:

yes