Bob is big. Charlie is rough. Fiona is big. Gary is white. All quiet, rough people are not furry. Young people are quiet. All big, rough people are furry. If someone is big and quiet then they are not white. If Bob is young and Bob is not white then Bob is quiet. If Fiona is white then Fiona is rough. If Charlie is not young then Charlie is not quiet. If someone is white and not furry then they are rough.
Charlie is not rough.