Erin is white. Erin is young. Fiona is blue. Fiona is smart. Fiona is young. Gary is young. Harry is white. Green, round things are smart. If Gary is green and Gary is quiet then Gary is round. Young things are green. Green things are smart. If something is quiet then it is round. If something is smart then it is quiet. Green, round things are white.
Erin is not round.