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: This is key: @DrFriedenCDC says viral hemorrhagic fever has never been transmitted in the USA. Our health system can isolate. Mark Leon Goldberg (@MarkLGoldberg) September 30, 2014 Question: did these people love this person? Answer: our hearts literally hurting

Output: no

Input: Consider Input: Context: .@SheriffClarke: "I know [@POTUS] personally. Look, he does not have a racist bone in his body." # Fox News (@FoxNews) August 15, 2017 Question: where is flavio edreira from? Answer: brazil

Output: no

Input: Consider Input: Context: @redcross volunteer Jeremy Bishop unloading water for 250 first responders in Tornado hit, Vilonia, Ark. Darren Irby (@deirby) April 28, 2014 Question: who is a redcross volunteer? Answer: jeremy bishop
Output: yes