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: To clarify, I was referring to Pres Obama's national security decisions that have led to rise of #ISIL, not to the President himself John McCain (@SenJohnMcCain) June 16, 2016 Question: who did people think john mccain was referring to? Answer: president himself

Ex Output:
yes

Ex Input:
Context: CBS teases a Charlie Sheen return - and builds the episode around his character - and he doesn't. So lame. #TwoAndAHalfMenFinale Brian Cantor (@cantorpedia) February 20, 2015 Question: what did they build the episode around? Answer: his character

Ex Output:
yes

Ex Input:
Context: "Juliet. Such a nasty woman. She made Romeo kill himself. And believe me he could have done better. Look at her." #TrumpBookReport Catherine Q. (@CatherineQ) October 20, 2016 Question: what is ted cruz attacking? Answer: family and spouses

Ex Output:
no