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 Input:
Context: My mom bought new conditioner and it sucks it isn't even conditioning my hair I blame obama DONT FOLLOW (@heatherfarley98) August 5, 2013 Question: what time does the show start? Answer: 7pm est

Ex Output:
no

Ex Input:
Context: It takes immense courage to do what Zimbabweans have done today. Your fellow Africans stand with you ✊🏾 #ZimShutDown2016 Ndayi (@alainndayi) July 6, 2016 Question: what did zimbabweans do? Answer: zimshutdown2016

Ex Output:
yes

Ex Input:
Context: GIF: Stamkos throws Prust's elbow pad into the stands after Prust whips it at him Stephanie Vail (@myregularface) May 4, 2015 Question: what does stamkos throw? Answer: elbow pad

Ex Output:
yes