| http://www.w3.org/ns/prov#value | - In addition to the main solid body of the review (this is usually somewhere between 400 and 1,000 words), there is a summary which contains vital statistics of the book with the publisher, page count and ISBN as well as a star rating out of five, a quick summary of approximately 30 words and a pointer to whether the book is worth buying, borrowing, both or neither.
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