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: This book was purchased for a PhD level course. It is a very easy read. It gives practical applications to the latest brain research. On a down note, there are not a lot of references documented within the text when Jensen quotes a study, but he does give an extensive bibliography. This book can be used for parents to read about how their child's brain works, or for teachers within a school system. It is a good book to read if you want basic information about the brain from an education standpoint.
A:
Positive