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: TONIGHT. The 100th episode of @NBCGrimm. So crazy. We are so grateful to our fans for helping us get here! #grimm100  Responser: Looking forward to the next 100!!! x
