Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The ultimate source for mobility

The Wireless Internet Explained is well worth the money. Mr. Rhoton has made an invaluable contribution to the new economy with a very readable book that explains, in very plain English, all aspects of wireless technologies. The book flows smoothly enough for you to read it at the beach, but it contains so much critical information that you should bring it back to your office. The most compelling parts point out the differences between mobile applications and their traditional counterparts.