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.

Example Input: Context: Kurt Helin @basketballtalkBrilliant dig: Knicks fans chant “Derek Fisher” as Kings’ Matt Barnes inbounds ball , 4:18:07 AM Question: what are the fans chanting? Answer: derek fisher
Example Output: yes

Example Input: Context: NO ONE ELSE can hold that power.— Jada Pinkett Smith (@jadapsmith) September 19, 2017 Question: what can no one else hold? Answer: god's own county
Example Output: no

Example Input: Context: Kindly Pray for Egyptair Flight MS804...i have a friend on that plane— Mohamed Khalf (@MeMo751) May 19, 2016 Question: who does the tweeter want prayers for? Answer: egyptair flight ms804
Example Output:
yes