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: Don't drive drunk Not even fake drunk @lenosgarage Wednesday night http://www.cnbc.com/2016/12/06/jay-leno-experiments-with-driving-drunk.html  Responser: It's funny, but Wow, very scary to think of anyone driving under the influence. And if you have blurred vision, you are drunk!
