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: Just hit my first BIG routine with this guy!!! Best workout I've had in ages... Great to get a solid lift in before I get on the road again! - If you haven't checked out the Steve Cook Big Program, get on it... It's seriously good!!! #LiftBig #GetBig - Shaun Stafford Fitness  Responser: WHO SAID AMERICANS ARE UGLY?
