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: .@JohnLegend got Stevie Wonder to perform with him. Because of course. Full episode: #LipSyncBattle (@SpikeLSB) September 12, 2016 Question: what did stevie wonder do with john legend? Answer: performed with him on lip sync battle.

Ex Output:
yes

Ex Input:
Context: #Presidentialselfiegirls got #10 last night Martin O'Malley - got to catch them all #nhpolitics Wendy E.N Thomas (@WendyENThomas) July 9, 2015 Question: who got to see it? Answer: martin o'malley

Ex Output:
yes

Ex Input:
Context: Gutted at such a sad end to an era. We're all three of us idiots in our different ways but it's been an incredible ride together. Richard Hammond (@RichardHammond) March 25, 2015 Question: what declaration has been made by police in emancipation park in charlottesville? Answer: unlawful assembly

Ex Output:
no