Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
One example is below.
Q: I've read this book with much expectation, it was very boring all through out the book
A: Negative
Rationale: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: The Rangers have a very interesting and colorful history. Unfortunately, not much of it positive. Nadel fills in all the blanks that existed from the Rangers formative years, stories that were too sensitive at the time they occurred, i.e. Rogelio Moret's mental illness, something that was never addressed in the papers of the day. I assume the Rangers had a say in the editing of this book and I commend them for not trying to make Nadel whitewash the team's history.This book is where history begins and ends if you follow the Rangers.
A:
Positive