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: About to go live at @americanlegion convention talking to about 5,000 #veterans - there exists no greater honor  Responser: YOU Go Montel Williams
