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: 5 years in 5 seconds. Darren Booth (@darbooth) January 25, 2013 Question: how many characters is this tweet? (excluding link) Answer: 21

yes