[Nicholas] and his son, [Glen], went to the store. [Amy], [Nicholas]'s wife, wanted them to pick up stuff for dinner.
('Amy', 'Glen')
[Nicholas] and his son, [Glen], went to the store. [Amy], [Nicholas]'s wife, wanted them to pick up stuff for dinner.
[{('Amy', 'son', 'Glen'): [('Amy', 'husband', 'Nicholas'), ('Nicholas', 'son', 'Glen')]}]
['husband', 'son']