Dave is furry. Dave is green. Dave is quiet. Dave is smart. Dave is white. Erin is not quiet. Erin is red. Quiet people are smart. If Dave is green and Dave is furry then Dave is quiet. If someone is not green then they are red. If someone is quiet then they are round. If someone is round and not green then they are quiet. If someone is white and not red then they are furry.
Erin is not round.