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

Ex Input:
This product requires a stereo player in which the balance is turned totally to the left. Most auto systems have that capability. However if you have Dolby or SurroundSound, it can be difficult (and maybe impossible) to play the cassette without hearing two recordings at the same time. Unfortunately neither the packaging nor the website will warn you of the problem. You therefore should think before buying. Once you have opened the packaging you may be unable to return the product.

Ex Output:
Negative

Ex Input:
I teach The Odyssey, and let me tell you, this movie does NOT reflect the book well, if you're watching it for testing purposes (and I know you are!) However, I DO show selected scenes (out of sequence because the movie is out of sequence) just because my students think it's fun. WHEN will a GOOD version be made??? I had such hopes for Troy, and meh....My students' favorite part is the inexplicable arm action of the guard who announces "Tele-machos of Ithaka!" Scenery WILL be chewed - even the usually OK Greta Scacci comes off rather poorly.

Ex Output:
Negative

Ex Input:
I won't spend time saying what has already been said so well by others. The reviews speak very well for this book and so they should. This book had me from page one and never let up. The only problem I had with this story was the age of Travis. I thought he was a little young for his character. I still give this book five stars and will read it again in the future. I also reccomend LAURA by Larry Watson and THE LAST PICTURE SHOW by Larry McMurtry

Ex Output:
Positive