Instruct: Classify an Amazon review into positive or negative sentiment.
Query: As an introduction fails sometimes

I read this weak book, here in Brazil.This book is a very short and concise general Patton's biography.Even as an introduction, this book is weak and biased.To exemple, Patton was a racist.This book simple doesn't shows, this detail about Patton.Patton was also an spiritualist, but this book also forgets this fact.About Patton's death, this book fails, because it doesn't shows that press' hate to Patton came from leftism, then (as today) with majority into american press.Even as an introduction about Patton's life, this book isn't the best choice.