Bob is green. Charlie is green. Charlie is not round. Erin is furry. Erin is quiet. Erin is smart. Fiona is round. If Fiona is quiet and Fiona is round then Fiona is white. All blue, quiet people are not smart. All round people are green. If Fiona is furry then Fiona is not round. White, green people are round. If someone is green then they are quiet. White people are blue. If someone is blue then they are round. If someone is blue and not white then they are not smart.
Charlie is white.