[James] and his son [Joshua] went to the skating rink. [James] was waiting patiently for his wife, [Frances]. [Frances]'s son, [Hugh], recently started a pawn shop.
('Joshua', 'Hugh')
[James] and his son [Joshua] went to the skating rink. [James] was waiting patiently for his wife, [Frances]. [Frances]'s son, [Hugh], recently started a pawn shop.
[{('Joshua', 'brother', 'Hugh'): [('Joshua', 'father', 'James'), ('James', 'son', 'Hugh')]}, {('James', 'son', 'Hugh'): [('James', 'wife', 'Frances'), ('Frances', 'son', 'Hugh')]}]
['father', 'wife', 'son']