[Frances] bought a gift for her son [Hugh]. She also bought one for her husband [James]. [Johnson] bought a book for his father [Hugh].
('James', 'Johnson')
[Frances] bought a gift for her son [Hugh]. She also bought one for her husband [James]. [Johnson] bought a book for his father [Hugh].
[{('James', 'grandson', 'Johnson'): [('James', 'wife', 'Frances'), ('Frances', 'grandson', 'Johnson')]}, {('Frances', 'grandson', 'Johnson'): [('Frances', 'son', 'Hugh'), ('Hugh', 'son', 'Johnson')]}]
['wife', 'son', 'son']