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: So excited! After doing all my school lessons, I'm taking my homework in the car for the long, long drive. Tonight I get to film my part in 'Mary's Buttons!"  Responser: Have a great day Amanda!!
