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: Today is the last day of early voting. Make sure to get out and vote before 6:00 pm tonight. Find your polling place at GeauxVote.com.  Responser: we have mail in ballots in washington state
