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

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
This book, though not "great literature", is a fun read, with plenty of romance and suspense. But you have to be willing to temporarily (for the duration of reading the book) believe in magic, including magical time travel, to let yourself get into the story. This book does have an engrossing, suspenseful story line in addition to the romance, so it is much better than those romance books that are simply an evolving romance held together by boring daily life events. I recommend it as good entertainment reading.
Answer:
Positive