[James]'s daughter [Lynn] had to stay home from work today. She stayed home to watch her son [Clarence] who was sick. [Clarence]'s aunt, [David], bought him a smart watch.
('James', 'David')
[James]'s daughter [Lynn] had to stay home from work today. She stayed home to watch her son [Clarence] who was sick. [Clarence]'s aunt, [David], bought him a smart watch.
[{('James', 'daughter', 'David'): [('James', 'daughter', 'Lynn'), ('Lynn', 'sister', 'David')]}, {('Lynn', 'sister', 'David'): [('Lynn', 'son', 'Clarence'), ('Clarence', 'aunt', 'David')]}]
['daughter', 'son', 'aunt']