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 is a text book I ordered for my classes for teacher certification. This book is very easy to read, and I am really enjoying it. It presents info and then at the end of a section, recaptures the essence of the reading for you. I would suggest it for any teaching class. I am learning so much from this book. I have been buying all my text books from Amazon because they are so much cheaper, and sometimes I can get free shipping. So far, there has not been a book that I could not find here at Amazon.
A:
Positive