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 Calgary Herald made a visit to set: http://www.calgaryherald.com/entertainment/Calgary+actress+Michelle+Morgan+grown+Heartland/7245175/story.html  Responser: I feel like a coiled up spring with anxiety!
