Instructions: 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: The KCTS 9 U.S. Senate debate starts soon!  Responser: That would be fine, Cheryl Meinke... if there were any left.
Output:
Mixed