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: This book does not have the most up-to-date photography but they are good enough and the general sentiment and prose are very nice. It gracefully combines science with the wonder of it all which makes a lovely combination. I had it 26 years ago when I was pregant and still recommend it.
A:
Positive