Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Read this book and discover the orgins of Holmes and Watson!

Could Sir Arthur Coylan Doyle actually be Dr. Watson? Could Sherlock Holmes be based on a man named Jack Sparks? Well if you want to find out, Mark Frost'd book, THE LIST OF 7 is a must read for every Sherlock Holmes fan. Frost has written a tale that leads the reader to believe that Sherlock Holmes is not merely a figment of someone's imagination, but rather in actual fact a significant part of Sir Arthur Coylan Doyle's life. You are drawn into this Victorian tale by first being invited to a seance. The story unfolds from there when you are introduced to a sinister plot that threatens the highest level of authority in England, Queen Victoria herself. Frost has come up with a wonderful theory regarding the orgins of Sherlock Holmes in the mind of Doyle. Don't miss this one, you will not be able to put it down until you finish