Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A stupid book

The only people who should get this book are people who are forced to because their school uses it. It is poorly planned and hard to find topics that you want to review. The worst part about this book is that it has no answers to the exercises in it making it usless for anyone wanting to advance at their own pace or for self studiers or even know if they are on the right track! A waste of money. Get New Penguin Russian Course instead for a fraction of the price it is way better than any of the books that the universities are using.