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 Lady Michelle Obama and daughters, Sasha and Malia, attended a World TeamTennis match earlier tonight as the Washington Kastles hosted the Boston Lobsters! Check out photos from this Presidential night for the Kastles!  Responser: Missed it!! Wish it had been aired on The Tennis Channel!! :(
