Charlie is quiet. Fiona is big. Fiona is furry. Fiona is quiet. Fiona is red. Fiona is round. Fiona is smart. If Charlie is quiet and Charlie is not big then Charlie is red. Round things are quiet. If something is white and not quiet then it is furry. If something is red and not furry then it is smart. If something is furry and not smart then it is round. If something is not smart then it is red.
Charlie is not round.