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: 'SOS': alleged cry for help from Chinese worker found in @Primark trousers: Amnesty UK (@AmnestyUK) June 25, 2014 Question: how long was @serenawilliams ride? Answer: 8 unforgettable years

no