Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: A Quality Example of the Craft of Books That Pop!

Everyone loves pop-up books and everyone loves castles. (Or at least I do.)This pop-up book, part of the Carousel line by HarperCollins from 1997, is absolutely delightful. The level of detail here is satisfying. There's castle exterior and 6 rooms: an entryway, a two-story throne room, two bed chambers, an armory, and a dining room. Lots of furnishings, wall decorations, light fixtures, doors that open -- and when you pull down the drawbridge two people on horseback crossing it are revealed! Additionally, there are punch-out characters. This is more satisfying than the plastic castle that I thought was pretty cool when I was a kid.When fully opened, the front and back covers meet, and are tied together creating a 360 degree diorama.And this isn't one of those pop-up books that will be quickly trashed. The cardboard is quality and the engineering of the pop-ups is intelligent and surprisingly sturdy.I love this thing.