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: Wrote a post whose sole function was explaining that my Trump tweets were a joke. Half the comments on that post: "Wow Trump really said that??" I give up. Do your thing, internet!  Responser: My news feed is packed with friends complaining about how gullible Trump supporters are, and this fake tweet. I give up too!
