Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terrible book - don't waste your time & money

I don't know what people who would review this book well are thinking. These authors may be good at creating the UML, but terrible at explaining it. The sentences are packed with words they haven't explained - or uncommon uses of words that really have no meaning, unless you are already a UML expert. I can't imagine a more poorly written text.