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

[EX Q]: I purchased this for my husband to load a recertification course on and study. He also has music on it and is enjoying it very much. It was a great price, especially for this much memory. And Amazon's service was great as usual.
[EX A]: Positive

[EX Q]: 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 A]: Negative

[EX Q]: If you worry about how much you pay for gas, read this book! END
[EX A]:
Positive