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: Can't sleep Too busy worrying about the controllers strike. Would prefer not to spend my holiday in the Airport. #airtrafficstrike— mafleen (@mafleen) June 25, 2014 Question: in what hospital is the msf team working? Answer: haradh hospital

Ex Output:
no


Ex Input:
Context: I desperately want a reporter to ask Sean Spicer what he has in his teeth Alexandra Gallant (@Gallantdesigner) March 27, 2017 Question: who was the piece by? Answer: dmitriy samohin

Ex Output:
no


Ex Input:
Context: We will not let these deplorable and cowardly acts of violence ruin #OurCity.— Mayor Rawlings-Blake (@MayorSRB) April 28, 2015 Question: what is the violence not going to be allowed to ruin? Answer: our city

Ex Output:

yes