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: This book in my opinion is biased and takes an angle of Europe that is "clean and proper" and fails to shed light on the rest of it. I can understand that these are "tourist guides" and why would anyone want to tour a country forgotten by time. However, I am a very disappointed Romanian with this book and would never use it as my reference. I have seen travel guides outlining Europe exclude Romania before, but with the precision and detail of DK's series, I was left yet again in disappointment.
Solution: Negative