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: Pharrell is a cyborg, a vampire or sold his soul to never age.— Nigel Int'l D. (@Nigel_D) February 17, 2014 Question: who was the person who wrote this tweet? Answer: barack obama

no