Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good at what it does

Be aware - this is a reprint of a 1970s-era textbook based on teaching ideas from the 1940s. It's a grammar book, strictly old school. So if you're looking for a pickup line or you just want to learn how to order in a restaurant, this isn't the book for you. And if you're looking to learn hiragana, keep looking.But DO buy this if you want the equipment to make your own sentences and start to nut out how to build proficiency from the ground up (something no phrase book will do, no matter how hip or relevant). If you want to learn Japanese on your own, half an hour a day with this will dig the foundations and put up the frame. No one book can do everything, so use other texts for the painting and decorating.Works for me.