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: Great parties are built on great principles, and they are judged by their devotion to those principles. Do you agree?  Responser: PRINCIPLES OF GREATNESS MUST BE CONSTANT GOAL OF USA
