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: 1/2 I've just chaired a COBRA meeting on the unprecedented flooding. Huge thanks to the emergency services and military for doing so much.— David Cameron (@David_Cameron) December 27, 2015 Question: who did people think john mccain was referring to? Answer: president himself

no