Charlie is blue. Charlie is green. Charlie is nice. Charlie is quiet. Charlie is round. Charlie is smart. Charlie is white. Fiona is blue. Fiona is green. Fiona is nice. Fiona is quiet. Fiona is white. Gary is nice. Gary is quiet. Gary is round. Quiet people are nice. If someone is green and smart then they are white. If someone is blue then they are smart.
Gary is not white.