Given reviews from Amazon, classify those review based on their content into two classes: Negative or 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: Ten gold bananas, two thumbs up and hurrah for Gorilla! What a wonderful book. It was a pleasure to read! If you just want to get comfortable and enjoy a book-this is the one I would suggest.
Example Output: Positive

Example Input: It is unfortunate that this film was ever DUBBED. It is not as though Aussies speak another language and Yanks aren't intelligent enough to work some the careful crafted slang in this classic.Fortunate now there is a new UNDUBBED version due for release this mouth, with more features and CHEAPER.I'm selling my old DUBBED copy and buying the new UNDUBBED version.
Example Output:
Negative