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: Good morning from Paris. Gettin prepared to compete in the Diamond League meet on Friday. I'll keep ya posted!  Responser: Bonne Chance and enjoy your time in my city :D
