[Douglas] braided his sister [Andrea]'s hair. [Lillian]'s son, [Douglas], went with her to the store to buy candy for Halloween.
('Lillian', 'Andrea')
[Lillian]'s son, [Douglas], went with her to the store to buy candy for Halloween. [Douglas] braided his sister [Andrea]'s hair.
[{('Lillian', 'daughter', 'Andrea'): [('Lillian', 'son', 'Douglas'), ('Douglas', 'sister', 'Andrea')]}]
['son', 'sister']