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

Example input: I've read this book with much expectation, it was very boring all through out the book
Example output: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: Dramatica: A New Theory of Story is a useful prep for using the software. It's an interesting and complete theory of story too, which is great. The book in general is well worth reading. My only problem is that if it's worth saying, it's worth saying WELL and this book uses twice the number of words it needs. The density of words also confuses the message. I felt, on more than one occasion, that the author was willfully complicating the message in order to ensure more sales of the software.Again, worth reading... valid and useful ideas... enough extra words that it undermines its own usefulness.
A:
Positive