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: First day in spikes! Getting some clearance work in, preparing for my first race in a couple of weeks! Felt so good to lace up in spikes again!  Responser: i hope to see you breaking world records again.
