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: Numbers of note: Warm Bodies is 69,437 words. I am currently 27,303 words into the sequel. Looks like this book is actually going to happen.  Responser: Go Isaac! So excited to read it.
