Bob is furry. Charlie is blue. Charlie is furry. Fiona is nice. Harry is blue. Harry is furry. Harry is young. If something is white then it is nice. Furry things are blue. If something is white and green then it is young. Green things are rough. If something is blue then it is white. Nice things are green. Green, blue things are furry. Blue, white things are young. If Bob is green then Bob is blue.
Charlie is not nice.