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.

Ex Input:
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

Ex Output:
yes


Ex Input:
Context: Our very weak and ineffective leader, Paul Ryan, had a bad conference call where his members went wild at his disloyalty.— Donald J. Trump (@realDonaldTrump) October 11, 2016 Question: who does donald trump think is an ineffective leader? Answer: paul ryan

Ex Output:
yes


Ex Input:
Context: Polls show slight break toward Obama over weekend -- a hurricane lift. Clearer favorite but Romney very capable of upset #ac360 @cnnopinion— David Gergen (@David_Gergen) November 6, 2012 Question: what is romney capable of? Answer: an upset

Ex Output:

yes