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: 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.
[EX A]: no

[EX Q]: Context: I'm proud to stand with Gov. @mike_pence for religious liberty, and I urge Americans to do the same Ted Cruz (@tedcruz) March 31, 2015 Question: who is she trying to win against? Answer: studio head
[EX A]: no

[EX Q]: Context: Here is satellite trajectory of #FlightMH17 and the missile US says shot it down. @NatSecCNN @cnnbrk Barbara Starr (@barbarastarrcnn) July 22, 2014 Question: what did the us shot dow Answer: a missile
[EX A]:
yes