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: Sen. Merkley is unveiling his plan today to boost the housing market and stem the tide of foreclosures. Stay tuned!  Responser: Indeed, thank you Senator Merkley. Ross, your side lost this battle at the ballot box.
