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: We are so excited to have the campaign twitter up and running!! Follow @Lowey4Congress to receive news and updates about the campaign and events! www.twitter.com/lowey4congress  Responser: Please support Congresswoman Lowey by following her campaign account on Twitter!
