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: Join me for the Pike County "Coffee with your Congressman" on Monday at 12pm. For details and to RSVP, visit http://wenstrup.house.gov/calendar/eventsingle.aspx?EventID=350163  Responser: I certainly feel like I have NO representation in Congress.
