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: Big game vs. UNC tonight. Let's go Hokies!  Responser: Man, my Hokies know how to make us sweat! It's a win....I'll take it.
