Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Example solution: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: fantastic investigative reporting with compelling analysis. as easy to read as a good spy thriller and as informative as a good textbook. valuable reading for anyone interested in Japanese finance and the relationship between bureaucrats, politicians, and business.read the first chapter on amazon.com and you'll be hooked.
Solution: Positive