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: Obama, Senate Democrats Rejected GOP's Common-sense Health Reforms in Favor of Disastrous, $2.5 Trillion Government-run Plan  Responser: The political world seems to have lost all touch with reality! And we elect these people? Go figure!
