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

[EX Q]: This would have been a very short book if all of the racism and sexuality were to be removed. I read it for an Appalachian Literature class, and I felt this book was so racey that I couldn't enjoy reading it. The vulgarity in it is also not necessary, and I feel that it should not be called literature because of this.
[EX A]: Negative

[EX Q]: 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 A]: Negative

[EX Q]: The price is right and these mugs have a great shape for easy handling. I wish I could say buy these, But...the rims chip very easily. Someone else stated this in their review should of followed their advice.
[EX A]:
Negative