[Hugh]'s wife, [David], just had a son. She decided to name him [Bobby]. [Frances] took her son [Hugh] to the park for the afternoon.
('Frances', 'Bobby')
[Frances] took her son [Hugh] to the park for the afternoon. [Hugh]'s wife, [David], just had a son. She decided to name him [Bobby].
[{('Frances', 'grandson', 'Bobby'): [('Frances', 'son', 'Hugh'), ('Hugh', 'son', 'Bobby')]}, {('Hugh', 'son', 'Bobby'): [('Hugh', 'wife', 'David'), ('David', 'son', 'Bobby')]}]
['son', 'wife', 'son']