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: Holiday gift ideas: "Unicorn Poop" cookies. Fun to make, even if you're not a unicorn! Mmmm... I can just smell them now!  Responser: what do you drink with these Chevy?? goat milk?? lol
