[Lillian] and her sister [Nancy] were at the library studying. [Ann], [Lillian]'s daughter, started laughing, and [Ann] told her to be quiet.
('Nancy', 'Ann')
[Lillian] and her sister [Nancy] were at the library studying. [Ann], [Lillian]'s daughter, started laughing, and [Ann] told her to be quiet.
[{('Nancy', 'niece', 'Ann'): [('Nancy', 'sister', 'Lillian'), ('Lillian', 'daughter', 'Ann')]}]
['sister', 'daughter']