Charlie is green. Charlie is white. Charlie is young. Dave is not round. Dave is smart. Erin is white. Fiona is blue. Fiona is round. Fiona is smart. Fiona is white. If something is white then it is nice. If something is young then it is green. All nice, green things are round. Nice, smart things are blue. If something is round then it is smart. All nice things are young. If something is blue and not round then it is white. If something is nice and not green then it is white.
Dave is young.