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: Very sorry to say that I have to pull out today. Very disappointed and I am obviously very sorry for any fans... Kei Nishikori (@keinishikori) March 28, 2014 Question: what athlete was featured in the advertisement? Answer: luis suarez

no