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: 1983 photo shoot for the cover of Rolling Stone Magazine with my dearly beloved Amazon, Lucy (above) and my African Grey, Doug. (Photo by Myron Meisel)  Responser: you know there is a bird on my head lol
