Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Entertaining and funny. Charaters are belivable and modern.

I will warn you that not only are they out of print. But he has yet to finnish the series. I rate this as two of the better books I have read and in a time when finding a good story in the sci-fi section is like finding Jimmy Hoffa that is saying a lot. Geary Gravels sence of humor rates with Harry Harrisons and he like to put his charaters in worlds were they can compare how narrow minded people can be.