Charlie is blue. Charlie is red. Dave is blue. Dave is furry. Dave is kind. Dave is quiet. Dave is not young. Fiona is young. Harry is furry. Harry is nice. Harry is quiet. Harry is young. If Charlie is nice then Charlie is kind. All nice things are quiet. All young, red things are nice. If something is nice and not young then it is red. Furry things are red. If something is furry and not young then it is nice. Red things are furry. If something is red and not nice then it is blue.
Fiona is not quiet.