[Nicholas] helped his son [Dennis] with his taxes, although [Nicholas] 'wife [Amy] would have preferred he did it by himself.
('Amy', 'Dennis')
[Nicholas] helped his son [Dennis] with his taxes, although [Nicholas] 'wife [Amy] would have preferred he did it by himself.
[{('Amy', 'son', 'Dennis'): [('Amy', 'husband', 'Nicholas'), ('Nicholas', 'son', 'Dennis')]}]
['husband', 'son']