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: .@letterman You are a class act that will be truly missed #legend Sarah Michelle (@RealSMG) April 4, 2014 Question: how does gellar describe the host? Answer: a class act.

yes