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

Example Input: This book has solved the problems we had while trying to manage my son's diabetes.You can find all answers in diabetes management.
Example Output: Positive

Example Input: If you're willing to trade a little style for some substance and save some money in the bargain, this is a very recommendable device. My Apple PowerBook power supply died in what is apparently typical fashion - sparking, crumbling wire where it meets the brick - and none of the Apple stores or CompUSAs in Atlanta had any in stock (which is curious in itself). I resorted to Amazon and decided to try this one out and I've been pretty happy with it. It seems sturdily constructed, and the breakaway cable is a surprisingly handy way to save on tangles. I do miss the plug-in charging light, but that's about it.
Example Output: Positive

Example Input: Get this movie!! If you like Quentin Tarantino, you'll love this incredible ride of a film. Cage is nothing less than brilliant.
Example Output:
Positive