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: Reminder: The deadline to enroll with #CoveredCA is Jan. 31. Log on and enroll now at http://CoveredCA.com #GetCovered  Responser: Thank YOU, Congresswoman Doris O. Matsui. Best wishes. :D <3
