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: Put a piece together tonight on Harrisburg tornado. Check it out at 9pm...if you can. No pressure!!!  Responser: Glued to the coverage. Our place is just SE of Harrisburg.
