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 Q]: 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 A]: no

[EX Q]: Context: i will say this only once:taylor swift is not in the slytherin house, she just has slytherin friends— yung sweet lassi (@andnowtothemoon) August 21, 2017 Question: how do they get sorted? Answer: the sorting hat, first day
[EX A]: yes

[EX Q]: Context: Warm up: Totti leads out the AS Roma side #RomaChievo AS Roma (@OfficialASRoma) October 18, 2014 Question: who is on liberty island? Answer: bomb squad
[EX A]:
no