Charlie is not big. Charlie is green. Charlie is kind. Charlie is not nice. Dave is big. Dave is green. Dave is kind. Dave is nice. Dave is rough. Dave is young. Harry is big. Harry is furry. Harry is nice. Harry is rough. Harry is young. All rough, green people are young. If Harry is furry and Harry is young then Harry is kind. Kind, young people are green. All big people are nice. If someone is not kind then they are not rough. If someone is young and not green then they are not big.
Charlie is not furry.