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

Q: As a student of jiujitsu i understood alot of the moves but i found that without previous knowledge these pictures and instructions were difficult to understand. I feel there is alot of good information but not worth buying.

A: Negative
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Q: A wonderful pictorial book about transistor radios, 175 of them, not only photographed but put in the context of fifties and sixties design. The spread on 60-61 shows six radios mixed with close-up photos of chrome styling from fifties cars. I loved the chapter on design with its photos of grills and lettering, even a spread on 9-volt batteries.This is the kind of book that Chronicle do so well, interesting subjct, well designed and printed all for the general reader. If you collect these radios you will certainly want to have a copy but don't expect to get lots of technical detail or a price guide. For that have a look at 'Collector's Guide to Transistor Radios' by Marty and Sue Bunis, plenty of text about seven hundred models, some photos and that all-important identification and price information.

A: Positive
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Q: This is the reason for HD TV's to exist, to watch a movie like this with higher quality and sound that a theater. Just great, buy it if you are a fan, buy it if you love movies, buy it if you love HD, buy it if you have a TV and a couple of hours to enjoy a good action movie.

A:
Positive
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