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