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: Standing by for @cnntonight right after the break. Tune in.  Responser: Am sure CNN was good. I feel as TV depresses me. Esp when people are shootin at color! I hope you are feeling good. I know MS is a terrible disease. Hope well for you and yours.
