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: Katy Perry's Halftime in a nutshell Travis Lattner (@TLatt7) February 2, 2015 Question: what is this twitter page currently discussing Answer: katy perry's halftime show

Ex Output:
yes


Ex Input:
Context: "I'm my opinion the firearm shown in the surveillance stills is a glock pistol" witness testifies @susancandiotti Lawrence Crook (@LawrenceCNN) March 11, 2015 Question: who brought down the house at the super bowl party? Answer: macklemore

Ex Output:
no


Ex Input:
Context: I WILL ALWAYS SUPPORT ZAYN BUT NOT ZAUGHTY.— OTRA Updates! (@OTRADaily) March 31, 2015 Question: what happened to the terrorists? Answer: they were locked down

Ex Output:

no