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: Joining Varney & Co. today at 11:30 on Fox Business to discuss the future and importance of American manufacturing.  Responser: This sounds interesting! I wish we had more than thirty minutes' notice; I guess I'll have to wait until you're local. When do you plan a visit?
