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 albino cobra that was loose in Thousand Oaks has been captured after being spotted under a fence. @nbcla  Responser: Just let the mongoose loose, to find it...
