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: Just finished "Part One" of Warm Bodies sequel. Already close to Warm Bodies' total page count. I am writing a zombie epic. Accept it.  Responser: Wish you could visit my library! I work with teens and they (and many adults - including me!) will be excited about this newest book. When does it come out?
