[Lynn] brought her son [Thomas] and her father [James] with her to the local swap-meet to hunt for nice antiques. [James] bought a book for his son [Hugh].
('Hugh', 'Thomas')
[James] bought a book for his son [Hugh]. [Lynn] brought her son [Thomas] and her father [James] with her to the local swap-meet to hunt for nice antiques.
[{('Hugh', 'nephew', 'Thomas'): [('Hugh', 'sister', 'Lynn'), ('Lynn', 'son', 'Thomas')]}, {('Hugh', 'sister', 'Lynn'): [('Hugh', 'father', 'James'), ('James', 'daughter', 'Lynn')]}]
['father', 'daughter', 'son']