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: Excited and honored at the overwhelming support received from Democrats in NJ! We filed with 13,790 signatures! Ready to embark on the re-election campaign for U.S. Senate!  Responser: MAKE THAAT 13,791 with my signature.
