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: Rep. Turner, Senators Voinovich and Brown lead delegation efforts to secure retired NASA Space Shuttle Orbiter for NMUSAF  Responser: Thank you for getting behind this... Dayton needs a shuttle! Have you seen the facebook fan page, "Bring the Shuttle to Dayton"?
