Bob is young. Charlie is smart. Dave is not young. Harry is not green. All quiet people are smart. If someone is not white then they are not green. If Harry is quiet and Harry is not kind then Harry is young. If Dave is smart and Dave is not kind then Dave is young. If someone is white and not blue then they are not quiet. If Charlie is white then Charlie is green. Green people are young. If Charlie is not smart and Charlie is not green then Charlie is kind.
Dave is young.