Instruct: Classify the given review as either positive or negative.
Query: an excellent piece of writing

This book provides a wonderful history of the grandchildren of Queen Victoria. As well as being detailed and interesting, this book is also rich in photos of the royal family. Through this book, the reader can gain clear insights into this fascinating family and their unique personalities and how their intermarriage linked all of the houses of Europe together. A helpful family tree is also included, and I liked the format of this book, the way it was divided into sections.