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.

[EX Q]: 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
[EX A]: yes

[EX Q]: Context: Did you miss the first half? Here's what it looked like on our live blog: #CNNWorldCup CNN Football Club (@CNNFC) July 8, 2014 Question: who was the world cup against? Answer: brazil and germany
[EX A]: yes

[EX Q]: Context: Under Trump's trade plans, we would see higher prices, fewer jobs, and a weaker economy U.S. Chamber (@USChamber) June 28, 2016 Question: what would we see under trump's plan. Answer: porch
[EX A]:
no