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.

Input: Consider 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

Output: yes

Input: Consider Input: Context: my heart is broken. i love you profoundly my dear friend. and i will miss you everyday. may flights... Zachary Quinto (@ZacharyQuinto) February 27, 2015 Question: who caused all of this? Answer: blatter wasn't sole responsible, more have to follow.

Output: no

Input: Consider Input: Context: First pics of Ben Affleck as Batman (and by pics, I meant pecs) that suit is looking killer Sky Hartman (@Skyhartman) May 13, 2014 Question: what advice does the author have? Answer: get home safe.
Output: no