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: Had a good match, a great diner with friends...Paris is treating me well!  Responser: Good going! I wish ESPN would broadcast all your matches!
