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: We're keeping the victims and families of today's Colorado shooting in our hearts and prayers and hope that you will, too.  Responser: Sending Prayers from here in Ireland,so so sad :(
