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: Plugged in source says 90 percent chance @KingJames returns to #Cavs, & it'll be announced on 0: Chris Sheridan (@sheridanhoops) July 8, 2014 Question: which site will announce if king james is returning to the cavs? Answer: lebronjames.com
[EX A]: yes

[EX Q]: 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 A]: yes

[EX Q]: Context: Coach k is tellin the team..."great half, but that's over now! Play like the score is 0-0. Let's have a great 2nd half!And have fun!" #Duke Christian Laettner (@laettnerbball) April 4, 2015 Question: what sports event was this tweet in reference to ? Answer: it was in reference to the olympics.
[EX A]:
no