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: Excited to officially open my new Facebook page as a Congresswoman!  Responser: !!! NOW!!! https://twitter.com/onlynomaly/status/821388395637342209 ! #2017ClosingCatsDogsMeatMarkets #2017WorldMediasdWithMarcChing #2017WorldMediasForHouseResolution30
