[James] took his son [Francisco] out to dinner to celebrate his promotion. [Francisco] brought his son, [Wayne], along to celebrate. [Pete]'s brother, [Wayne], recently got elected as a senator.
('James', 'Pete')
[James] took his son [Francisco] out to dinner to celebrate his promotion. [Francisco] brought his son, [Wayne], along to celebrate. [Pete]'s brother, [Wayne], recently got elected as a senator.
[{('James', 'grandson', 'Pete'): [('James', 'grandson', 'Wayne'), ('Wayne', 'brother', 'Pete')]}, {('James', 'grandson', 'Wayne'): [('James', 'son', 'Francisco'), ('Francisco', 'son', 'Wayne')]}]
['son', 'son', 'brother']