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: US "Heartland" Fans! Who's excited to see the premiere of Season 10 tonight on UPtv at 8pm EST?? Did you know the they will be showing 2 episodes every Sunday at 8pm?? Heartland on UPtv #iloveheartland  Responser: I am missing season 9 :( I am behind
