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: You hear about prescription drug addiction but don't really understand it. This book takes you into Barbara's life with such an addiction. The writing is excellent. There is so much detail regarding her struggle back to a normal productive life. I have a new respect for individuals and their families with this illness.
A:
Positive