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: Nearby Army Pavilion has become a tent city. 1000s made homeless or too scared to be under a roof are squatting here. Tim Hume (@tim_hume) April 27, 2015 Question: what has become a tent city? Answer: the lord

Ex Output:
no


Ex Input:
Context: Angel. #RIPMayaAngelou The first book I read as a teenager, "I know why the caged bird sings". Felt like we knew her Rihanna (@rihanna) May 28, 2014 Question: who did she feel like she knew? Answer: mayaangelou

Ex Output:

yes