Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terribly written book on some rather exceptionaly exciting subjects.

It is quite difficult to determine if this book is a documentary or a novel. The overall style of narration points to it being a documentary, while some, rather out of place phrases, such as `he walked away into a snowy night', attempt to present it with a flavor of a novel. While English is clearly not the writer's native tongue, it is hard to overlook editor's poor job. A published work should not have blunders such as "teachers demanded a pay rise". While the subject of Chinese (and for that matter, World) history in 20th century is very exciting and one learns a lot from the book, dealing with 5th grade level English is rather frustrating and soon becomes very tiring.