Bob is green. Bob is red. Charlie is quiet. Charlie is not white. Charlie is young. Dave is green. Dave is kind. Dave is rough. Dave is white. Dave is young. Fiona is rough. Fiona is young. If Dave is white then Dave is young. If someone is not quiet then they are green. Young, white people are kind. If someone is red and not rough then they are not quiet. If someone is rough then they are not quiet. If someone is white and quiet then they are red.
Charlie is not young.