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: Ghana journos are safe. Police barricade separates us from the fans. We're ok. For now. #afcon2015 Gary Al-Smith (@garyalsmith) February 5, 2015 Question: who's thoughts do they want? Answer: speaker cruz
[EX A]: no

[EX Q]: Context: Ed Werder @EdwerderespnYes, every cart has a Cowboys player's name on it. HOF players don't cost more. Seem to be randomly assigned , 8:24:38 PM Question: what does every cart have? Answer: cowboys players name on it
[EX A]: yes

[EX Q]: Context: The UK is the biggest per-capita contributor to temperature change & among the least vulnerable to its affects. #BlackLivesMatterUK (@ukblm) September 6, 2016 Question: are they literally laying on the airstrip? Answer: protesters boycotting to stop the plane.
[EX A]:
yes