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: Morgan Freeman surprised us right before Larry King arrived! What a show! Larry King SiriusXM Radio #thecraigfergusonshow #morganfreeman #larryking #surprise #siriusxm  Responser: Oh look, it's Mr. Withers lol...
