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

[EX Q]: If you're willing to trade a little style for some substance and save some money in the bargain, this is a very recommendable device. My Apple PowerBook power supply died in what is apparently typical fashion - sparking, crumbling wire where it meets the brick - and none of the Apple stores or CompUSAs in Atlanta had any in stock (which is curious in itself). I resorted to Amazon and decided to try this one out and I've been pretty happy with it. It seems sturdily constructed, and the breakaway cable is a surprisingly handy way to save on tangles. I do miss the plug-in charging light, but that's about it.
[EX A]: Positive

[EX Q]: An exellent study of the German Airforce from the fall of Sevastopol in the Crimea to its failure at Stalingrad. Very well written, with a clear analysis of the events. Well worth the money and it belongs in every major collection on World War II's Eastern Front.
[EX A]: Positive

[EX Q]: I found the basic idea of the book to be excellent and very true to life, however, I cannot say the same for the characters, Felicia in particular. Beyond her frustration, we are never privy to any of her emotions. What did she think of her plight? Why did she never worry that Johnny, her lover, might reject her? I feel that the author made a mistake by never writing in Felicia's viewpoint during her scenes with Mr. Hilditch. We certainly know many of his feeling and thoughts concerning Felicia, but never, never any of her thoughts about her sinister friend. ...The character of Mr. Hilditch is very well developed, unfortunately more so than the main character. I felt that too much of the book (one quarter) was devoted to Mr. Hilditch's downward spiral. It almost becomes a completely different story.As a previous reviewer mentioned, the author's practice on going back and the forth between past and present was confusing.
[EX A]:
Negative