Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I can't believe I wasted my time on this book!

I had read reviews of this book and was looking forward to a good read. As I was getting close to the end last night I thought, "Surely the author is waiting to the very last to make this book worthwhile." I'm still wondering how and WHY I stuck with it.What a disappointment and a waste of time. I learned a few interesting things about Algeria, however.