Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent introductory book

"The Death Penalty : A Debate" is an excellent introduction to the topic for two primary reasons. First, it presents the two main opposing view points argued well by experts on the subject, so regardless of your own position you need not fear that the book is biased. Second, it covers the subject thoroughly, addressing each issue individually, and relying on facts to support claims. This means, after reading this book, you'll have plenty of ammunition the next time you want to argue the subject with someone esle.