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: I'll be on the Neil Cavuto program on Fox News within the hour. Please tune in!  Responser: Bravo, Kristi! You were great on Cavuto. I especially loved your response to elitist NYC Mayor Bloomberg's insults about Republicans. And what a compliment from Stewart Varney!
