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: Joe Biden's having a scotch right now while Paul Ryan's mom is putting his "debate participation" certificate on the refrigerator. #vpdebate— Buck (@buck4itt) October 12, 2012 Question: who's mom is putting a certificate on the fridge? Answer: out of joy

Output: no


Input: Consider Input: Context: Today is for this girl. She had the dream, always believed in herself & her worth. Today she is the one smiling. KATY PERRY (@katyperry) February 1, 2015 Question: what has the girl always believed in? Answer: her self and her worth


Output: yes