[Lillian] and her brother [Dale] went to the basketball game and had a great time. [Amy] called [Lillian], her sister, to see if she wanted to go out to eat.
('Dale', 'Amy')
[Lillian] and her brother [Dale] went to the basketball game and had a great time. [Amy] called [Lillian], her sister, to see if she wanted to go out to eat.
[{('Dale', 'sister', 'Amy'): [('Dale', 'sister', 'Lillian'), ('Lillian', 'sister', 'Amy')]}]
['sister', 'sister']