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

Let me give you an example: I've read this book with much expectation, it was very boring all through out the book
The answer to this example can be: Negative
Here is why: Review writer does not like the book because it was boring, therefore it is a negative review.

OK. solve this:
Sure, a few of the specific examples cited 60+ years ago are no longer relevant today, but the basic lessons are absolutely and permanently valid and need more than ever to be understood by at least a majority of the voting public.The sad fact is that Americans can go through the entire public school system and "higher education" without learning the first thing about economic science (while getting bombarded with self-serving economic propaganda). Thus public gullibility to the fallacies cited by Hazlitt seems no less pervasive now than back then, while the resultant cancerous growth of government economic meddling has only increased.Here's a revolutionary fantasy: Make this book a required study by all high school students. Imagine what that would do for the kinds of politicians who get elected in the future.BTW, you can get the nice hard-cover edition at less cost directly from the Mises Institute.
Answer:
Positive