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: One vote down, Two to go before the House finishes its job on Health Care Reform. A vote of 224 yes on the Rule makes me predict 219 to 222 votes for final passage. It passes at 216.  Responser: We can still make the public option happen. At least now we are headed in the right direction.
