Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

It does an excellent job on mildewed wood such as decks and deck furniture without using chemical mode which is the only weak link in an otherwise strong chain. Unfortunately, the only effective chemical solution is chlorine which acts more or less on its own but cannot be used with this machine. Safe cleaners, such as Simple Green are no more effective than when used without them. Other than that, it's a great product.
Positive

I thought this book was long, drawn out, and boring. It was too descriptive. To me, the writing style is a lot like Jane Eyre. I don't particularly like that type of book.Plus, it was way too sad and unrealistic. I don't think THAT many bad things could happen to one person.
Negative

I bought thnking was another artist, but anyway when I watch it , how bad this guy sing, very bad, no voice, it is terrible show, terrible sound. Not worth it at all
Negative