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

Example Input: All of the good things said about "Helter Skelter" is true of the Kindle edition. What's more the Kindle edition has hyperlinked footnotes that actually work and take you instantly to Bugliosi's notes. But the trade-off is that with the Kindle edition THERE ARE NO PICTURES because of licensing issues. The print edition has lots of pictures, but many of the crime-scene photo's are censored.
Example Output: Positive

Example Input: It is extremely rare to see so many world famous super artists performing together in the same concert doing some of their greatest hits - Elton John, Sting, Mark Knofler, Carl Perkin, Eric Clapton, Paul McCartney, Phil Colins etc. You must own this DVD before it is out of stock. I would have given it 5 stars should the audio recording be slightly better. Go and buy this one with confidence. I am sure you will not regret.
Example Output: Positive

Example Input: No, I'm not talking about Hester's crime. I'm talking about this STUPID BOOK! If only Hawthorne had kept his job in the customs house (see prologue), this abomination would never have been spawned from the cess-ridden depths of Hawthorne's twisted thinking organ. (You can figure THAT out on your own). This book is untolerably boring (the only proven cure of insomnia - if you don't mind the side effects) and the descriptions are ridiculously entangling. In the words of Mr. Hawthorne himself, this book is "ignominiously" dull. PRESERVE YOUR SANITY! NEVER READ THIS! NEVER!I sleep now...
Example Output:
Negative