Instruct: Classify the given review into positive or negative sentiment.
Query: An nice nice book.

I liked the book. It was a fun read. I went straight through itin just a few sittings. It definitely fits the know spacesetting. Don't, however, expect to feel the same way you did when you read Ringworld. It is not a brilliant new idea. It is a nice story in Niven's universe. You find out more about the Ringworld, the protectors and it sets things up nicely for more adventures in Ringworld and moving Ringworld into known space. It fills in a lot of details.The first and second part of the books seem rather contrived in their connection and are almost two seperate stories. The protector bit is overdone. A problem with the book is that despite the fact that the appearance of the original characters is minimal, almost nil in the first part, the book makes little sence without reading at least Ringworld Engineers, better still Ringworld and Protector.