Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good standard dictionary

I have found this book as a good translation device when working with Latin. It does not go into great detail concerning grammer or anything else, but for a cheap book to translate words from latin into english, and vise versa, then I highly recomend this book. If you are looking to become a master of the Latin language, then there is really only one choice, which is Wheelock's Latin.