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: http://www.nwfdailynews.com/local/names-of-local-death-row-inmates-sent-to-governor-document-1.214701?tc=cr  Responser: Walls should die...horrible crime he commited!
