Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Nothing you need to know about the dangers of ....etc.

Less than 60 pages of big-type and useless photos. You can read this book in less than 10 minutes. This information is contained in probably thousands of web sites. Total waste of time and money. I was scammed (my fault not Amazon's), but I'm getting my money back - don't spend yours.