Bob is kind. Bob is white. Bob is young. Dave is blue. Dave is kind. Dave is round. Erin is big. Erin is kind. Erin is round. Erin is not young. All green people are blue. Kind, young people are blue. All round, green people are kind. All young, big people are green. If someone is white and young then they are round. If Erin is not green then Erin is not white. If someone is not blue and not kind then they are white. If someone is not white then they are not green.
Dave is young.