Instruct: Classify Amazon reviews into positive or negative sentiment
Query: One of Picoult's better books

I just finished reading Harvesting the Heart and I was sad to put it down at the end. Picoult does a great job of digging deep in her character's hearts and showing them to be just like us. It's a beautiful story, but a sad one in many ways. The ending was good, though it doesn't wrap everything up like most of her books, but I liked that. It gives room for the reader to imagine what will happen next. Picoult is a wonderful writer and I highly recommend all her books, especially the newest one, Nineteen Minutes.