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: The US Embassy in France (@USEmbassyFrance) has changed its Twitter pic to the #JeSuisCharlie image Elena Cresci (@elenacresci) January 7, 2015 Question: what imagine did it change to? Answer: je suis charlie
Example Output: yes

Example Input: Context: AP Top 25 @AP_Top25Swanigan leads No. 21 Purdue past Penn State 77-52 , 7:52:05 PM Question: purdue passed what team with a score of 77-52? Answer: penn state
Example Output: yes

Example Input: Context: Condolences to the family of Darryl Dawkins, a great man! Your smile personality and energy will truly be missed!!!— Allen Iverson (@alleniverson) August 27, 2015 Question: what was the nickname of the recently deceased basketball player darryl dawkins? Answer: his nickname was chocolate thunder.
Example Output:
yes