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: Joe Biden's son ousted from the Navy for cocaine? If the son is like the father, that's a scary thought: think of Joe Biden. Now add cocaine Bill Maher (@billmaher) October 18, 2014 Question: what branch of military was joe biden's son in? Answer: navy
Example Output: yes

Example Input: Context: Um Dev Patel can get it. Retta (@unfoRETTAble) January 9, 2017 Question: who does the poster believe should get it? Answer: she said "surprise!!!!!"
Example Output: no

Example Input: Context: Zach Lowe @ZachLowe_NBALOL at Brian Davis (OKC play-by-play) on Jerami Grant blocking Langston Galloway at the rim: "HE PUT HIM IN GRANT'S TOMB!"12/5/2016, 2:41:14 PM Question: where did langston galloway get blocked at? Answer: myspace
Example Output:
no