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: Oops, Bradlee! Can hear Ben yelling now, "You White House clowns never get it right!" What a wonderful man.— David Gergen (@David_Gergen) October 22, 2014 Question: who is yelling now? Answer: ben

Ex Output:
yes


Ex Input:
Context: Jimmy & @KevinHart4real visit a haunted house! #FallonTonight u Fallon Tonight (@FallonTonight) October 14, 2016 Question: who visited a haunted house with jimmy fallon Answer: kevin hart

Ex Output:
yes


Ex Input:
Context: #Aleppo : As Russia abuses its veto at the #UNSC - we must work to hold to account those participating in potential war crimes. Tobias Ellwood MP (@Tobias_Ellwood) December 14, 2016 Question: what country is blocking action against those committing war crimes? Answer: russia

Ex Output:

yes