Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Example Input: This set of assorted short tracks is hard to avoid if you want to create a track layout of even an intermidiate size. The male-male and female-female pieces will provide a dramatic increase in the number of layouts possible as you can now overcome the problem of curves returning to the starting position.This is a must-have for any Brio enthusiast.
Example Output: Positive

Example Input: I've heard it said that this is Kerouac's greatest novel. I still say that honor is held by On the Road, but this book is just as good. And it is his most spiritual novel. Kerouac combines his talent at writing with his philosophy of life and what you have is a powerful tool to enlightenment. This book should be read on at least two levels, as a work of great literature and as a theological tool. I can't recommend it enough.
Example Output: Positive

Example Input: I bought this in hopes to reduce some small bumps on my cheeks and even out my skin tone. What I got was horrible acne and sores all over my face. The very next morning after using it I woke up with zits on my face! I haven't had acne since I was a teenager. My first thought was, it must be cleaning out the pores, thus the breakout, but after three weeks of using it every other day, my face is covered in sores that won't heal! I don't want to say it's a bad product, because it obviously works for most of the people that have written reviews, but my experience has not been good. I will never use it again. I'm just glad I got it on sale for $45. C'est la vie.
Example Output:
Negative