Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Absolutely useless for most cities!

This book is based upon the assumption that you can locate a zip code by telephone area code. This only works for small rural communities. In large cities such as Boston, San Francisco, Los Angeles, Chicago, New York, Miami, etc. there are many telephone area codes for a single zip code. If you are looking for a zip code this book will indicate several telephone area codes for one zip code. If you are looking for a telephone area code this book will reveal several zip codes. How would you know which zip code to use if there are several zip codes for one area code? Totally bogus and useless. This book is only a half inch thick compare to other zip code books which is about four inches thick.