Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sad and disturbing

How sad! I wanted to learn about Marlene Dietrich's life and this is the first biography I've read, but it will not be the last. I felt sorry for the author (her daughter), but that changed. Being confused and unhappy as a child is one thing, to stab your mother in the back after she is dead is quite another, especially as it is so obvious that Dietrich trusted her daughter. Also, I noticed a mistake about Yul Brynner (he had a Swiss passport, but was born in Russia to a wealthy family).There were some interesting stories and information that only a family member would know, but I can't recommend the book, unless the reader realizes that an ugly reading experience awaits.