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: Took a tour of Finch Paper in Glens Falls today and met with representatives of the company to learn about their modernization and investment efforts.  Responser: Did they explain how much they dump in the River LEGALLY of course?
