Instruct: Classify an Amazon review into positive or negative sentiment.
Query: The guy is an imposter!

I'm a real estate investor and this is, without a doubt, the worst book I've read. It seems evident that this guy has never bought any apartments (or any other commercial property, for that matter) in his life. There's not a single example in the book of his personal experience on a closed deal. Almost all of his advice is ludicrous.