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: Dean's advice to fledgling writers: "Don't scope the market, you have to write what you love...be positive about yourself." https://www.youtube.com/watch?v=PiBr7vcmv7o  Responser: Finish the fear the night series!
