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: Just finished mind-writing the sequel and a tear came out of my face. So excited to share this story with you.  Responser: I cannot wait for this. My heart is beating with anticipation and my brain is yearning for more R.
