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

Q: Great book for people that need to write email. It would be nice to review the grammar rule's from time to time.

A: Positive
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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.

A: Negative
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Q: I am not a professional movie critic, but I love movies. This was a poorly written movie and that's why I gave it two stars. The focus for this movie was clearly to make money utilizing graphics and taking advantage of a strong fan base. After watching it, I understand why Megan Fox turned down the opportunity to be in it. I would give you examples from the movies as to why it was so horrible, but let's just say it was that forgettable.

A:
Negative
****