Instruct: Classify an Amazon review as either positive or negative.
Query: Worthwhile hagiography

Written by (or, more probably, for) the founder and CEO of Starbucks, this is, of course, corporate hagiography. But it's nevertheless a fascinating story of how the entrepreneurial spirit can thrive even outside the high-tech arena. It's also a good read. It will also change the way you think about coffee. Recommended.