Anne is green. Anne is kind. Anne is round. Anne is white. Dave is blue. Dave is white. Erin is blue. Erin is round. Harry is quiet. Harry is round. All kind, young things are quiet. Young, round things are kind. All white, young things are kind. If Erin is kind then Erin is quiet. White things are green. Green things are round. If something is round and green then it is young. If something is white and young then it is round.
Harry is not young.