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: To those brave American heroes whose valor has taken them across this world to protect us here at home, we thank you. Happy Veterans Day!  Responser: November is Pancreatic Awareness Month Sir. Are you in? https://www.facebook.com/JointheFight/photos/a.10150582490267998.385340.11911627997/101525
