Charlie is white. Charlie is young. Erin is green. Erin is quiet. Erin is smart. Erin is young. Fiona is green. Fiona is quiet. Harry is green. Harry is quiet. If Harry is quiet then Harry is young. All young, quiet things are red. White things are furry. Furry things are green. If something is green and red then it is smart. If something is smart then it is green. All red, smart things are white. If Harry is furry and Harry is young then Harry is quiet.
Fiona is not smart.