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.

Input: Consider Input: Context: The progress we made today in #Munich can and must improve the lives of the Syrian people.— John Kerry (@JohnKerry) February 12, 2016 Question: who made progress in munich in february 2016? Answer: the usa

Output: yes


Input: Consider Input: Context: We introduce the girls to mentors who are females in STEM and these mentors teach the girls to code #thisisafrica Regina Agyare (@ragyare) September 24, 2014 Question: what are these girls and their mentors involved in? Answer: stem

Output: yes


Input: Consider Input: Context: Well done @virginatlantic pilots & team for safe & skillful landing of #VS43. Thoughts with passengers & crew, thanks for support & patience— Richard Branson (@richardbranson) December 29, 2014 Question: why are the virgin atlantic pilots being thanked? Answer: mike nichols


Output: no