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: Season 5 Grimm poster with David Giuntoli's handsome mug. PS Gs the premiere date is Friday October 30, 9pm NBC. Make sure you set your calendars to watch my friends rock Season 5 :)  Responser: Excited for season 5, but will be bummed if you're gone.
