Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Disappointing

Any book I really like has to have a great start that gets me in to the book, an interesting story, and then I'm hooked. I basically get annoyed to have all that, and then a dud ending. This book is so interesting all the way through and then - DUD! It doesn't just have a weak ending, it has an ending that seems to be for an entirely different book. I was left wondering why I spent the time. Skip it.