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: Am praying for the people of the small Texas town where the fertilizer explosion occurred. Please join me.  Responser: They should require plants like these to have a 25ft berm around the facility...which woul irect the blast and pressure wave caused by an losion upwards...away from surrounding homes an buildings.
