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: Big huge thanks to @NBC for our SIXTH SEASON pickup! And thanks to our ridiculously amazing fans. We would not be here without your support and loyalty and general awesomeness.  Responser: Thank goodness Bitsie! Love you all and we grimmsters are a very loyal bunch!
