[Nicholas] drove his daughters [Natalia] and [Jennifer] to school.
('Jennifer', 'Natalia')
[Nicholas] drove his daughters [Natalia] and [Jennifer] to school.
[{('Jennifer', 'sister', 'Natalia'): [('Jennifer', 'father', 'Nicholas'), ('Nicholas', 'daughter', 'Natalia')]}]
['father', 'daughter']