[Lillian] wanted her daughter, [Janet], to go shopping with her. [Janet] invited her sister, [Ann].
('Lillian', 'Ann')
[Lillian] wanted her daughter, [Janet], to go shopping with her. [Janet] invited her sister, [Ann].
[{('Lillian', 'daughter', 'Ann'): [('Lillian', 'daughter', 'Janet'), ('Janet', 'sister', 'Ann')]}]
['daughter', 'sister']