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: 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 the mentors teaching the girls to do? Answer: code
Example Output: yes

Example Input: Context: I dont blame Derrick Rose for being cautious but I fully expected him to be back by now. Seems like it's largely psychological at this point Josh Lewenberg (@JLew1050) March 8, 2013 Question: what is derrick ross doing? Answer: being cautious
Example Output: yes

Example Input: Context: Connect the dots: @OPCW sure chlorine used in #Syria, witnesses saw it dropped by helicopters,which only Assad has. Who's responsible? #UNSC Lithuania in UN NY (@LithuaniaUNNY) October 7, 2014 Question: who has helicopters that could be used on syria? Answer: assad
Example Output:
yes