Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Revelation Space

Reynolds is a phenomenal writer, and this is not an easy read. It begins "in medias res" using language that only makes sense if you stick with it. The payoff, however, is worth it. As the action unfolds in circles within circles, the logic is flawless, and the ending is satisfying enough to hook you into the next book in the series.