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: Jimmy & @KevinHart4real visit a haunted house! #FallonTonight u Fallon Tonight (@FallonTonight) October 14, 2016 Question: who visited a haunted house with jimmy fallon Answer: kevin hart
Example Output: yes

Example Input: Context: Greg Auman @gregaumanShrine Game gives offensive MVP to RB Eli McGuire, who had game's only TD, and defensive MVP to Trey Hendrickson, who had a sack-fumble.1/21/2017, 11:12:45 PM Question: what did hendrickson have Answer: a sack-fumble
Example Output: yes

Example Input: Context: I said what I had to say about freedom day. Now, go out, and be FREE, south Africa. Be free and let others be free.— Ruan (@RuanHaHa) April 27, 2015 Question: which country is the poster referring to? Answer: south africa
Example Output:
yes