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: Obama: "There is nothing weak" about veterans asking for help concerning PTSD #ObamaTownHall CNN Politics (@CNNPolitics) September 29, 2016 Question: what kind of grind is it? Answer: unimaginable

no