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: Prince didn't even perform tonight and he owned the Grammys. Mashable (@mashable) February 9, 2015 Question: how many refugees were stuck? Answer: 100s

Ex Output:
no

Ex Input:
Context: The new lightsaber design is good so you can kill a bad guy in front of you while also fighting two tiny bad guys to your sides Thoughtter (@ThoughtOtter) November 30, 2014 Question: what weapon is being praised? Answer: the lightsaber

Ex Output:
yes

Ex Input:
Context: #WhatBritishMuslimsReallyThink when I got braces, my dad asked my orthodontist if I could still eat curry. Samiha Begum (@SamihaTBegum) April 10, 2016 Question: what campaign is seeking help? Answer: cornwall campaign

Ex Output:
no