[Nancy] is taking a trip to see her sister [Amy]. [Amy] loved to care for her newborn child [Milton].
('Nancy', 'Milton')
[Nancy] is taking a trip to see her sister [Amy]. [Amy] loved to care for her newborn child [Milton].
[{('Nancy', 'nephew', 'Milton'): [('Nancy', 'sister', 'Amy'), ('Amy', 'son', 'Milton')]}]
['sister', 'son']