[Frances] and her husband [James] made a brisket for their son [Francisco]. [Francisco]'s son [Pete] does n't eat brisket.
('Frances', 'Pete')
[Frances] and her husband [James] made a brisket for their son [Francisco]. [Francisco]'s son [Pete] does n't eat brisket.
[{('Frances', 'grandson', 'Pete'): [('Frances', 'husband', 'James'), ('James', 'grandson', 'Pete')]}, {('James', 'grandson', 'Pete'): [('James', 'son', 'Francisco'), ('Francisco', 'son', 'Pete')]}]
['husband', 'son', 'son']