Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What a disappointment!

When Lilian Jackson Braun wrote The Cat Who Could Read Backwards years and years ago, I was immediately captivated, and the next couple of books reinforced that first love.She disappeared for a long time, but finally reemerged -- and, oh, what a disappointment.Sadly, each new Cat book is worse than the last, and it's getting to the point it's not worth the bother.Goodbye, Koko and Yum-Yum, it was great while it lasted!