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: I'm encouraged by what I heard at yesterday's Supreme Court hearing on Obamacare's individual mandate http://ow.ly/9VEhG  Responser: I am always disappointed when you refer to the Act as Obamacare. I expect you to be above the pettiness. I actually think you are better than that. Just my opinion.
