Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Island of the Dumb Dolphin

Island of the Blue Dolphin is a book about a girl who is accidentally left behind when her Indian tribe sails away to another island. After many months, she tries to swim to an island that she sees close by. She succeeds, but not very easily. Two men find her all washed up with scratches and bruises everywhere. They quickly carry her to a hospital where she takes many months to recover. During this time, she remembers her life on the island. The rest of the book is about her recalling her past. This is a book that is very long and boring.