Bob is big. Bob is blue. Bob is green. Bob is quiet. Bob is rough. Bob is round. Charlie is green. Charlie is quiet. Charlie is rough. Charlie is round. Fiona is big. Fiona is blue. Fiona is green. Fiona is rough. Fiona is round. Fiona is white. Big people are white. If Bob is green then Bob is round. All round, quiet people are white. Quiet people are white. If someone is big then they are green. If Bob is green and Bob is round then Bob is rough. Big people are blue. Quiet people are white.
Charlie is not white.