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: Consider Input: Context: .@JohnLegend got Stevie Wonder to perform with him. Because of course. Full episode: #LipSyncBattle (@SpikeLSB) September 12, 2016 Question: what did stevie wonder do with john legend? Answer: performed with him on lip sync battle.

Output: yes


Input: Consider Input: Context: Prince didn't even perform tonight and he owned the Grammys. Mashable (@mashable) February 9, 2015 Question: how many refugees were stuck? Answer: 100s

Output: no


Input: Consider Input: Context: Commissioner: "Do not leave your decision to the last minute. Do not think fire can't happen to you. Do not expect a fire truck." #nswrfs— NSW RFS (@NSWRFS) October 22, 2013 Question: should you wait till the last minute? Answer: the commissioner says do not wait.


Output: yes