Given the task definition, example input & output, solve the new input case.
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
Output: Negative
Review writer does not like the book because it was boring, therefore it is a negative review.

New input case for you: Dr. Bernstein is a type 1 diabetic and had just about every sympton possible. He figured out the "diabetes code" and clearly explains how to control your diabetes. His cure is exactly opposite to that of the medical establishment. He was educated as an engineer, then became a medical doctor late in life. His book is designed to educate and not to impress how smart he is. Buy it.David Smith
Output:
Positive