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: @klustout make it quick. drop it in the tub. better for both of you...— Bill Bishop (@niubi) September 24, 2013 Question: where were some victims from? Answer: council bluffs, iowa
[EX A]: no

[EX Q]: Context: The results are in. Unfettered free trade has been a disaster for working Americans. It is high time we ended our disastrous trade policies.— Bernie Sanders (@SenSanders) August 24, 2015 Question: who is trade a disaster for? Answer: working americans
[EX A]: yes

[EX Q]: Context: We only have one goal. We want to go to Lisbon." #FCBMUFC 3-1 FC Bayern English (@FCBayernEN) April 9, 2014 Question: how many goals does #robben claim they have? Answer: one
[EX A]:
yes