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

[Q]: I am using this textbook in a class and it is a whopper. Wonderful pictures, easy to read, clear colors and understandable. I've been working in prisons for 5 years and this book makes a lot of sense. You ought to read their sections on women in prison and on probation. I loved the parts on geriatric prisoners (old cons) and the death penalty. And it is easy to read. More!
[A]: Positive


[Q]: I purchased this for my husband to load a recertification course on and study. He also has music on it and is enjoying it very much. It was a great price, especially for this much memory. And Amazon's service was great as usual.
[A]: Positive


[Q]: I'm a 100% satisfied with the Squeem Magical Lingerie Shapewear. It delivers what it promises, everything that describes the product it's true. It reduces about 2 inches instantly, it hardly shows with thin clothes, it doesn't let me eat a lot and I feel full the rest of the day, It recommends to wear it about 8 hours but I can even sleep with it, the only thing is that I get marks like when wearing thigh socks, it gives me a smaller waist than what the picture shows, and it's the perfect length for my core.I'm 5'3, I tried another brand before but it was too long for me, I could feel the wires poking specially when bending down. I recommend to measure yourself before ordering any brand.Once I get used to this one, I'm planning to order the "Extra firm compression". It gives more back support and it will reduce the waist even more!
[A]:
Positive