Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This book was an incredible disappointment

As an avid reader and a fan of most of Oprah's Book Club selections, I have to admit that I was truly disappointed by Mother of Pearl. The characters really lacked definition and despite the various stages of turmoil each was facing in their lives, I didn't care about any of them or what happened to them. The story lines for each character seemed to go no where -- very slowly. Since the book was so long and drawn out and I didn't much care about any of the characters, I actually stopped reading the book with only about 100 pages left. I have never, ever not finished a book before, no matter how bad -- so that should give you an idea of how awful this one was. If you're looking for a good book along the lines of Oprah's usual picks, try Home is Where the Heart is by Billy Letts, Here on Earth by Alice Hoffman or Black and Blue by Anna Quindlen.