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: Be sure to tune into WMUR-TV for their 11 PM news tonight to see a profile piece on Maggie and her family!  Responser: too bad it's being aired so late.
