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: This morning the Supreme Court passed up an opportunity to undo damage caused by Citizens United. Passage of the DISCLOSE Act is needed now more than ever.  Responser: Yeah but we need one that doesn't exempt the gun industry profiteers of the NRA.
