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: Thanks for all your support yesterday, it is much appreciated! I look forward to seeing folks on the campaign trail in the weeks ahead.  Responser: Well deserved. So thankful you are there.
