Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excellent and informative book!

I knew Robert Slatzer and met Marilyn Monroe on several occasions, and contrary to biased opinion, Slatzer's friendship with Marilyn endured from 1946 until her death. He was a true gentleman, and an honest man. I found "The Curious Death of Marilyn Monroe" to be a factual, fascinating book.