Charlie is round. Erin is red. If someone is young and not green then they are not big. All green, round people are not big. If someone is round and not smart then they are quiet. If Charlie is young and Charlie is quiet then Charlie is not round. If someone is quiet then they are red. If someone is big and quiet then they are not round. If Erin is not green then Erin is young. If someone is not red then they are big.
Erin is not quiet.