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: A9: Africa is the last "blue ocean" for tech, the opportunities here are huge. Why would you choose anywhere else? #CNNAfrica— Erik Hersman (@whiteafrican) January 14, 2015 Question: what color is the ocean? Answer: blue

yes