Definition: Given a 'poster' sentence and a corresponding 'response' (often, from Facebook or Reddit)classify the sentiment of the given response into four categories: 1) Positive, 2) Negative, 3) Neutral, and 4) Mixed if it contains both positive and negative.
Input: Poster: What a great time to stop and think just how fortunate we are to live in the greatest country mankind has ever known. May each and everyone of you have a wonderful Thanksgiving!  Responser: Happy Thanksgiving to you too David!!
