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: Kurt Helin @basketballtalkCeltics’ Jaylen Brown, reportedly Spurs’ Jonathon Simmons invited to dunk contest , 5:39:15 PM Question: to what is jonathon simmons invited? Answer: a dunk contest.

Ex Output:
yes


Ex Input:
Context: From backflips to @Koreanfan_KC, there's been magic brewing in Kansas City all year long: MLB (@MLB) October 9, 2014 Question: who was part of the magic brewing in kansas city Answer: koreanfan_kc

Ex Output:
yes


Ex Input:
Context: Well, that explains what happened to my iPad! RT @BillClinton: I'm following my leader! Hillary Clinton (@HillaryClinton) April 1, 2014 Question: who took hilary clinton's ipad? Answer: bill clinton

Ex Output:

yes