[Frances] took her son [Wesley] to the football game. [David] is taking her nephew [Theodore] to the park. [Theodore] is a man with a son named [Wesley].
('Frances', 'David')
[Frances] took her son [Wesley] to the football game. [Theodore] is a man with a son named [Wesley]. [David] is taking her nephew [Theodore] to the park.
[{('Frances', 'daughter', 'David'): [('Frances', 'son', 'Wesley'), ('Wesley', 'sister', 'David')]}, {('Wesley', 'sister', 'David'): [('Wesley', 'son', 'Theodore'), ('Theodore', 'aunt', 'David')]}]
['son', 'son', 'aunt']