Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Challenging, intriguing and highly entertaining

Although a long book, I couldn't put it down. I was immediately involved with all the characters and couldn't wait to find out what happened to them. And there's the rub. Obviously, the author is trying to avoid traditional narrative styles by doing something a little different. But I ultimately found this incredibly unsatisfying. He builds up interest and suspense in a certain character's story, and then then it's dropped, one way or another. You never find out what really happened in many key story developments. This happens so often that it's clearly purposeful, although I'm not sure what the point is. I almost wasn't sure whether he just couldn't decide what to do with his characters (especially that totally unsatisfying ending). Of course, all of this IS like real life, but this is a novel I'm reading for pleasure. In any case, definitely NOT boring (to me).