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: So amazingly disrespectful https://t.co/bhe99l20rL  Responser: Well now I know never to cheer for you again. I rooted for you as an American, even if your game was basically just a serve. I assume Jack Sock shares your shitty political views? Bye bye to both of you
