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: Back on court 1 @rolandgarros with @Bryanbrothers! Match #2 and #Selfie #2 Love it! #tennis #myjob #life #live #letsdothis #RockinTheSocks  Responser: Watched your match with Mike too. Two triumphs in one day! Gurl, you GO and keep goin'!!!!!
