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: SAN DIEGO: impromptu meetup and very special giveaway at Young Hickory tonight from 7-9! Details below:  Responser: Any other meet ups in the San Diego or IE area planned for the rest of the week? I just haaad to take a nap and miss seeing this news!
