Dave is round. Dave is young. Erin is big. Erin is furry. Erin is green. Erin is white. Fiona is furry. Fiona is white. Gary is big. Gary is furry. Gary is green. Gary is quiet. Gary is round. Gary is white. Gary is young. Quiet people are round. All furry people are quiet. If Dave is round then Dave is furry. If someone is furry then they are big. If someone is white and furry then they are young. All young, quiet people are green. Big, white people are quiet. All green people are young.
Fiona is not quiet.