[Dale] and his sister, [Lillian], were on their way to see [James], Micheal's son.
('James', 'Lillian')
[Dale] and his sister, [Lillian], were on their way to see [James], Micheal's son.
[{('James', 'aunt', 'Lillian'): [('James', 'father', 'Dale'), ('Dale', 'sister', 'Lillian')]}]
['father', 'sister']