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: Hello All!! Weird question...looking for someone who has been involved in a texting and driving accident. If you have...can you send me a private message. Doing some research for a story.  Responser: Hopefully not while driving!
