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

Ex Input:
I've read all of the Night World books, and this is a great book, but I must say, it's not L. J. Smith's best

Ex Output:
Positive

Ex Input:
I am a huge fan of science fiction and fantasy, and have been reading these books for 20 years. I picked up the Foundation books because Asimov was supposed to be so great, and I really enjoyed his short stories. This book - all of the books in this series - is so amazingly boring it could be used to replace Thorazine. The concept was solid, but the characters made me not care at all. I kept hoping they would die simply so there would be something interesting happening. If you must read it, check it out from the library and save your money. Unless of course you're a chronic insomniac; then, by all means, buy this book.

Ex Output:
Negative

Ex Input:
I'm frustrated by things that never get fixed on this product. I use the Sansa View to listen to 1-hour mp3 recordings from a class I'm taking. If I pause the recording in the middle and resume later in the day (after the Sansa has powered down), the recording NEVER starts where I left it!!!!! The most frustrating thing is that I've reported this problem to SanDisk over 6 months ago and it is never addressed, even though my problem was acknowledged by their tech support.To further complicated things, the fast forward does not accelerate, so when I need to get back to the 30th minute of the recording, I have to hold down the fast-forward button for about five minutes. I also reported this problem over 6 months ago with the same result -- acknowledged by tech support but never addressed.With the amount of firmware updates they've made, this is clearly a product being beta tested on the customers.

Ex Output:
Negative