Erin is big. Erin is nice. Erin is quiet. Erin is round. Erin is smart. Erin is white. Erin is young. If someone is round then they are big. If someone is round and big then they are quiet. All quiet, round people are young. All big people are round. Big, quiet people are nice. If Erin is nice then Erin is quiet.
Erin is not young.