[James] and his wife [Frances] are going to be at the play. [Hugh] was proud of his son, [Bobby]. [Hugh] asked his son, [James], to help paint his house.
('Frances', 'Bobby')
[James] and his wife [Frances] are going to be at the play. [Hugh] asked his son, [James], to help paint his house. [Hugh] was proud of his son, [Bobby].
[{('Frances', 'grandson', 'Bobby'): [('Frances', 'husband', 'James'), ('James', 'grandson', 'Bobby')]}, {('James', 'grandson', 'Bobby'): [('James', 'son', 'Hugh'), ('Hugh', 'son', 'Bobby')]}]
['husband', 'son', 'son']