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: Honored to introduce His Holiness the Dalai Lama yesterday, a man of faith and a man of science.  Responser: I knew it was you when I saw the bow tie. The whole day actually felt like a holy experience.
