Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great, outdated, reference book

I used to buy every edition of this book because it contains great country information that is well organized and presented. Sadly, I have not seen any new editions published in the past few years, presumably because most of the information is available on the internet. Nonetheless, I would buy new editions of this book if it were updated. Given 4 stars instead of 5 because book is now 5 years old.