Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Defining book, and classic Sci Fi

I read this book when it first came out, and was the first Greg Bear book I had read. As such, it holds a special place in my mind and heart. I enjoyed reading (and re-reading) this book. It is a classic escapist Science Fiction, hard to put down, and totally entertaining.Read it for yourself, but get your own copy. :-)