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 is if not the best then it's up there in the top five, along with the other 3 she has written. The story of a young women struggling to grow up and live in a world that doesn't accept her can be related to each of us and will be a book you remember for the rest of your life. The writing is fantastic and you are swept away into a world of prehistoric man that you won't want to come back from. The only problem is when you finish all 4 of her books you are on edge waiting for her to finish the next one. Earth's Children should be the set of books every person has and you will reread it many a time.
Answer:
Positive