You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

I've read this book with much expectation, it was very boring all through out the book
Solution: Negative
Why? Review writer does not like the book because it was boring, therefore it is a negative review.

New input: I am sympathetic to the perspective of this author, but not to his arrogance or all of his smug conclusions. He is too much the demagogue for my taste, liking as much to degrade as to disagree with his adversaries. This is well beneath the normal standards of his sponsor, The Cato Institute, which usually holds to an exceptionally high standard.I much prefer the similar but far more intelligent and respectful works of Warren Brookes and Julian Simon. They were so good they didn't require "attitude." In contrast this author is frequently on TV, the perfect medium for the condescending sneer which is his mien. This book doesn't belong on the shelf with Henry Mencken, who wickedly and hilariously debunked quacks. Pass on this and buy "The Vintage Mencken" to read his evisceration of chiropractic.
Solution:
Negative