Charlie is blue. Charlie is furry. Charlie is nice. Charlie is quiet. Charlie is rough. Charlie is white. Charlie is young. Dave is furry. Dave is young. Fiona is not young. All young, blue things are furry. If something is not young and not quiet then it is nice. White things are rough. All white things are blue. All nice, rough things are white. If something is not young then it is rough. If something is nice and not rough then it is not furry. If something is not rough then it is not white.
Fiona is not blue.