Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Helpful, informative. Must buy!

I checked this book out from my local library and was glued to it for the full three weeks. I copied down many of the recipes and use them often. Now I realize that I must own a copy! The information in this book is too important to my family; we need it as a reference tool. I have been studying nutrition and health for years but learned more from this book than anywhere else.