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: Students at the University of Cape Town, South Africa attend a vigil for students killed in Kenya. #GarissaAttack Mr. B (@Benogola) April 7, 2015 Question: what did students at university of cape town attend? Answer: a vigil for students killed in kenya

yes