[Nancy]'s brother [Nicholas] joined the Army. While he was overseas, he left his daughter, [Natalia], in [Nancy]'s care.
('Nancy', 'Natalia')
[Nancy]'s brother [Nicholas] joined the Army. While he was overseas, he left his daughter, [Natalia], in [Nancy]'s care.
[{('Nancy', 'niece', 'Natalia'): [('Nancy', 'brother', 'Nicholas'), ('Nicholas', 'daughter', 'Natalia')]}]
['brother', 'daughter']