Definition: 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.
Input: Context: .@cnnafricanstart Q2: we don't test (or even ask) our customers what they want enough. Get out and talk to your customers.— Erik Hersman (@whiteafrican) January 14, 2015 Question: what does erik hersman think cnnafricanstart should do Answer: get out and talk to your customers

yes