Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Interesting, challenging read

Furst's novels are not the standard romantic, sweeping emotionalexercises we often expect in World War II novels. He excels inhistorical settings and authentic details of WWII. But as thisnovel moves from Poland to France to Ukraine, we see a great dealand experience life as it was at that time. The open-ended conclusionviolates the tidy endings we might like, but Furst does not tella sweeping drama: he drops in on a segment of a man's unique life.Steve Wiggins, author of "Streets of Warsaw."Streets of Warsaw: A Novel of the Polish Resistance in World War II