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: KellyAnne Conway setting all sorts of fashion trends for the # Michael Moran (@TheMichaelMoran) January 20, 2017 Question: who is setting all sorts of trends? Answer: kellyanne conway

Ex Output:
yes

Ex Input:
Context: Crowd joins choir at #MikeBrown's funeral, singing & dancing to hymn, ""Every Praise." Eliott C. McLaughlin (@EliottCNN) August 25, 2014 Question: what knocked a house off its foundation? Answer: a mudslide

Ex Output:
no

Ex Input:
Context: From the @CDCgov, #Ebola is not airborne. Requires close contact with symptomatic infected person. 2 cc @texasinafrica kim yi dionne (@dadakim) September 30, 2014 Question: how can ebola be passed on to another person? Answer: it needs close contact with an infected person.

Ex Output:
yes