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: Hui King To, who's been at protests since the start, says he feels "a little bit confused" about where they're headed Jethro Mullen (@jethromullen) October 2, 2014 Question: what special day was referred to? Answer: national sandwich day

no