[Lynn] went to the park with her son [Clarence] and after the park they went to visit [James] who is [Lynn] father. [David] and her nephew [Clarence] played the piano together.
('James', 'David')
[Lynn] went to the park with her son [Clarence] and after the park they went to visit [James] who is [Lynn] father. [David] and her nephew [Clarence] played the piano together.
[{('James', 'daughter', 'David'): [('James', 'daughter', 'Lynn'), ('Lynn', 'sister', 'David')]}, {('Lynn', 'sister', 'David'): [('Lynn', 'son', 'Clarence'), ('Clarence', 'aunt', 'David')]}]
['daughter', 'son', 'aunt']