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.

Poster: Some snaps from behind the scenes at the Australian Open  Responser: Takes me back to the days when women's tennis had some class!
Positive

Poster: Today, I am proud to receive the Spirit of Enterprise Award from Nello Ruscitti, Chairman of the Havasu Chamber of Commerce.  Responser: Congratulations, Paul and thank you!
Positive

Poster: The students, faculty, and staff at Seattle Pacific University are in my thoughts and prayers this evening.  Responser: rational regulation of guns, perhaps?

Negative

