[Lillian] took her brother [Nicholas] and her daughter [Ann] out for dinner at Chili's.
('Nicholas', 'Ann')
[Lillian] took her brother [Nicholas] and her daughter [Ann] out for dinner at Chili's.
[{('Nicholas', 'niece', 'Ann'): [('Nicholas', 'sister', 'Lillian'), ('Lillian', 'daughter', 'Ann')]}]
['sister', 'daughter']