Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Example: I've read this book with much expectation, it was very boring all through out the book
Example solution: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.

Problem: I have difficulty putting into words just how much each of the Earth's Children books have transformed my way of thinking. Auel's ability to create characters who use our natural resources for the greatest good has strong appeal. Each book has spun a world of reality-based fantasy which can guide how we see the world today. The world of Ayla, the Clan, and the Others is one in which EVERYONE should enter... and decide to stay.
Solution: Positive