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: Happy to answer viewer questions about immigration reform at WYFF on Sunday morning:  Responser: You are not my Congressmen, but I saw you on the PBS News Hour last night. I say, touche'. And I wondered why your not my President.
