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 was my first experience reading Hazlitt and it won't be my last. He has an "Adam Smith" way of writing (whether intentional or not, who's to tell) and everytime I wanted to compare this book to Wealth of Nations, I quickly curbed my enthusiasm. This is a good book, not great and I'm not quite sure why all the great reviews. I do like his way of explaining some very difficult economic ideas and I can see this book being a valuable introduction to economic principles, maybe not economics 101. In summary, well worth your time to read but not a good enough book to truly fit it's title.
Answer:
Positive