Part 1. Definition
Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Part 2. Example
I've read this book with much expectation, it was very boring all through out the book
Answer: Negative
Explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Part 3. Exercise
Very briefly, to the pair of one-star reviews below, keep in mind that these stories were written in the 1940's! Must you blame Mr. Asimov for "inaccuracy" in a time where much more mainstream sources felt that by 1980 we'd all be zipping around in flying bubble cars? Obviously you missed the point here. The Foundation series is about our own humanity, not about where we will be technologically in the year 15000. No, I can't prove that there could actually be a Mule, but why waste your time trying to? The Mule is probably one of the best literary constructs to grace the world of science fiction, one that isn't decked out in gadgets and laser beams. There's something to be said about a writer that can make a sci-fi villian without resorting to hi-tech hijinks. You didn't like the Mule? Well tough luck and go back to reading your Star Trek novels.
Answer:
Positive