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: Why in this day in age do we rely on the physical recovery of black boxes? Flight data should be continuously streamed to the cloud #8501qs— Jacob Rossi (@jacobrossi) December 29, 2014 Question: who had to break through the ice in lake michigan Answer: cutter hollyhock

Output: no


Input: Consider Input: Context: Happy Birthday Nelson Mandela. You teach us tolerance, forgiveness and simple kindness. #Saint— Kim Engelbrecht (@kimengelbrecht) July 18, 2012 Question: whose's birthday is it? Answer: nelson mandela


Output: yes