Instruct: Classify Amazon reviews into positive or negative sentiment
Query: small book, big message

At first I wondered if there couls be any substance in such a small book. But when I read it, I realized you don't have to go on for 400 pages to get the point across. Although I'm not sure that every bad relationship could be fixed by an apology, taking the steps suggested in the book sure can't hurt. Plus, knowing you might have to apologize later makes you think about what you're doing NOW.