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.

Example Input: Context: I am stunned by the failure to indict Eric Garner's killer.— John Legend (@johnlegend) December 3, 2014 Question: who's going to cut this out? Answer: ya'll
Example Output: no

Example Input: Context: #RedCross preparing a boat loaded with tarpaulins, set to sail for Nui tomorrow #CyclonePam @Federation New Zealand RedCross (@NZRedCross) March 19, 2015 Question: what kind of products is the red cross taking to nui? Answer: tarpaulins
Example Output: yes

Example Input: Context: Obama reacts as he is greeted by a man wearing a horse-head as he walked the streets of downtown Denver. Doug Mills (@dougmillsnyt) July 9, 2014 Question: what position did the person who apologized hold? Answer: president
Example Output:
no