[Cindy] and her sister [David] braided each other's hair before school. [David] bought her son [Johnson] a car. [Johnson]'s sister [Marie] was jealous.
('Marie', 'Cindy')
[David] bought her son [Johnson] a car. [Johnson]'s sister [Marie] was jealous. [Cindy] and her sister [David] braided each other's hair before school.
[{('Marie', 'aunt', 'Cindy'): [('Marie', 'mother', 'David'), ('David', 'sister', 'Cindy')]}, {('Marie', 'mother', 'David'): [('Marie', 'brother', 'Johnson'), ('Johnson', 'mother', 'David')]}]
['brother', 'mother', 'sister']