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

Ex Input:
This book was brand new when I received it. However, it did not arrive for 20 days after I ordered it.

Ex Output:
Negative

Ex Input:
What a junk. Every time NOMAD thinks the file is corrupt the OS freezes. The only way to recover is to plug the power cord and go into recovery mode. So if you happen to be out of the house and you have a frozen OS you can't use NOMAD until you get home. After OS froze twice on me in the subway I returned the jukebox.

Ex Output:
Negative

Ex Input:
I've been studying music in the classical realm for a long time, but have always been interested in electronic music in both performance and composition. Of all the electronic I've heard from Kraftwerk to Daft Punk, I must say this is perhaps the best I have ever heard. This two-disc set is nothing less than magnificent. The formal structure and sheer smoothness of the sounds from minute 1 to 95 is how music SHOULD be heard in the preset day. I have played every Beethoven Sonata, the complete Etudes of Chopin, Islamey, Gaspard de la Nuit, on and on... As an experienced pianist and professional classical musician, I think I can safely say that these master composers would have GLADLY accepted Hawtin into their inner circle, if not for the plethora of distinct, yet related sounds, then for the complexity of the underlying formal structure that holds the entire soundscape together. This is a modern master-work. Don't miss the chance to experience it...

Ex Output:
Positive