TASK DEFINITION: In this task, you are given a context tweet, a question and corresponding answer of given question. Your task is to classify given passage into two categories: (1) "yes" if the given context is useful in answering the question, and (2) "no" if the given context is not useful.
PROBLEM: Context: The results are in. Unfettered free trade has been a disaster for working Americans. It is high time we ended our disastrous trade policies.— Bernie Sanders (@SenSanders) August 24, 2015 Question: who is trade a disaster for? Answer: working americans

SOLUTION: yes

PROBLEM: Context: Prince didn't even perform tonight and he owned the Grammys. Mashable (@mashable) February 9, 2015 Question: how many refugees were stuck? Answer: 100s

SOLUTION: no

PROBLEM: Context: Make no mistake, Obama achieved this despite DC conventional wisdom on Iran. He deserves extra credit precisely cause he didn't listen to it— Trita Parsi (@tparsi) July 14, 2015 Question: who was the opportunity given to? Answer: white women

SOLUTION:
no