Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This is a very poorly written book!

Obviously, NO one edited this book.It is full of grammatical errors and improper use of the English language. I purchased it yesterday and I'm taking it back today. I could never tell who was speaking since quotation marks were rampant and oftentimes unclosed. And really - before you write a book, know the difference between "your" and "you're" for God's sake. Sorry to disappoint you author - the content was okay but you really need an editor/proofreader badly.