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

Example input: I've read this book with much expectation, it was very boring all through out the book
Example output: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: This book is definitely an "In Your Face" program. Each chapter presents full frontal examination of your Spirituality.Unless you do the exercises at the end of each chapter, you are missing the full benefit of the book.I highly recommend you use this book in a class or at least working with one other person to discuss what comes up for you.
A:
Positive