[Ashley] took her daughter [Lillian] to see her very first ballet performance. [Lillian] and her sister [Amy] braided each other's hair before school.
('Amy', 'Ashley')
[Lillian] and her sister [Amy] braided each other's hair before school. [Ashley] took her daughter [Lillian] to see her very first ballet performance.
[{('Amy', 'mother', 'Ashley'): [('Amy', 'sister', 'Lillian'), ('Lillian', 'mother', 'Ashley')]}]
['sister', 'mother']