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: Sorry I haven't tweeted in a while. I'm in Scotland experiencing airplane envy.  Responser: I wish I was back hame whae you. Have a great time.

Positive