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: What do you make of minimum sentencing laws? Our @Nightline report http://abcnews.go.com/Nightline/video/locked-life-nonviolent-drug-bust-29069642  Responser: Release this guy ASAP!!!!
