Erin is furry. Erin is green. Erin is kind. Erin is nice. Erin is quiet. Erin is smart. Erin is young. Fiona is furry. Fiona is nice. Fiona is quiet. Fiona is smart. Fiona is young. If someone is quiet and young then they are green. If someone is green then they are kind.
Fiona is not young.