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: The most recent proposal by the Tea Party in the House is even more extreme than the one they passed a week ago. We can still avoid a government shutdown but not if this game-playing persists.  Responser: Stay strong. They are showing their true colors.
