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:
Watch out for this turkey! Definitely a disk for the true believers only. Sound quality as bad as any bootleg I have ever listened to, some songs fade (on a live album!?) and skimpy liner notes add up to a pretty bad package. And the addition of a keyboard player seems to hurt rather than add to WA's sound. If you are dying for a live disk from WA's "Locked In" tour, this will have to do. Otherwise, save your money.
Answer:
Negative