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

Ex Input:
Had no luck, even with latest firmware, getting the unit to resume any of my audio books. I tried changing the tags on the mp3 files but it did not work. The unit would go into auto shut off and then force you to start your audio book file from the start every time.

Ex Output:
Negative

Ex Input:
i usally buy these boots from famous footwear and pay like 80 to 90 bucks so i found them on amazon alot cheaper, thanks

Ex Output:
Positive

Ex Input:
I read the first 3 John Carter books and wanted to see how the story progressed. Edgar Rice B. has made me bored with his style. This story is LONG on description and SHORT on plot. There is so much description that I lost track of what I was reading. I realize he wrote during the last century and people did not realize Mars was what it was. I guess I will be very embarrassed if the Mars Rover proves Edgar Rice was right!!!!!!

Ex Output:
Negative