Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Perfect!

I have taught and preached out of the hardcover version of this for 15 years. It is a treasure. While my notes are still in that copy, it is a joy to have this Kindle edition to carry with me wherever I take an e-reader. I didn't think a Kindle version would be ready yet, but am delighted to be wrong. To me this demonstrates the popularity and usefulness of this edition of Luther's Catechism.