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: Glad meeting w/ hospital administrators from #AL-02 about healthcare issues. Thanks to Troy Regional Medical Center for hosting my visit.  Responser: Thanks to you and your staff for taking time to come and visit with us today.
