Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Is something wrong?

I ordered this book twice from Amazon (new and used)! I did not received this book yet?Why?Maybe is something wrong written in this book!Please, pay attention:Product DescriptionRepresents the most comprehensive treatment available of neural networks from an engineering perspective. Examines all the important aspects of this emerging technology. DLC: Adaptive filters.--This text refers to an out of print or unavailable edition of this title.