[Nicholas] really cares about his sister, [Theresa]. His son [Michael] does as well.
('Michael', 'Theresa')
[Nicholas] really cares about his sister, [Theresa]. His son [Michael] does as well.
[{('Michael', 'aunt', 'Theresa'): [('Michael', 'father', 'Nicholas'), ('Nicholas', 'sister', 'Theresa')]}]
['father', 'sister']