Instruct: Classify an Amazon review into positive or negative sentiment.
Query: She should know!

Over the years, I have purchased many writing books. This one stands out against the others because instead of being grammar rules oppressing it is writing style enlightening. The author's objective is to keep the writer from confusing his audience. And the fact that the author has been a professional copy-editor and proofreader for ten years gives credibility to her suggestions. She knows first hand just how poorly people can write, what the most common errors in writing are (she claims there are seven), and how to avoid making those same mistakes yourself. Her writing approach is engaging and clever....you are seeking out the mystery of writing through solving the crimes of poor writing.