[Ann] and her sister [April] braided each other's hair before school. [Lillian] took her daughter [Ann] to the store to find her some new boots for the cold winter weather.
('April', 'Lillian')
[Ann] and her sister [April] braided each other's hair before school. [Lillian] took her daughter [Ann] to the store to find her some new boots for the cold winter weather.
[{('April', 'mother', 'Lillian'): [('April', 'sister', 'Ann'), ('Ann', 'mother', 'Lillian')]}]
['sister', 'mother']