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:
Ever since I discovered that this was being released on dvd, I have been bursting out with retarded noises of delightful joy! I am very excited about the release of my very favorite televisionsitcom,Threes Company, because of the many laughs I get from watching it mostly. You will not regret buying it, and that is a guaranteed guarantee!
Answer:
Positive