[George]'s sister, [Theresa], was crying, so he told her a joke. She laughed, and felt better. [Theresa] drove her son [Travis] to his soccer game.
('George', 'Travis')
[George]'s sister, [Theresa], was crying, so he told her a joke. She laughed, and felt better. [Theresa] drove her son [Travis] to his soccer game.
[{('George', 'nephew', 'Travis'): [('George', 'sister', 'Theresa'), ('Theresa', 'son', 'Travis')]}]
['sister', 'son']