Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A quietly desperate book.

This story is so potent and powerful it takes your breath away. Otto and Sophie, a married couple living in the 60's lead lives of such deep desperation that a single, seemingly ordinary event manages to bring out all that is truly desperate about their lives. Sophie is bitten by a stray cat, and worries about rabies. That one event takes us through one entire weekend with Otto and Sophie, and that one weekend tells us more about them and their lives than their own autobiographies could. Sophie and Otto are childless, and while Otto suffers the intense pain of the loss of a valued business partner, and Sophie suffers the near certainty that she is rabid, the author takes us into their hearts, around their souls, and through their lives in a journey that you won't soon forget. It is as though there is a deep, grey, chilling fog around the book itself, and each page absorbs you into the fog, until you too, are quite desperate to see what happens in the end.