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: We had a great event in Wilmington last night. Thank you Congressman Patrick McHenry and Majority Leader Eric Cantor for joining us!  Responser: It says a lot when two of the most detestable people in Congress are helping you raise money.
