[Wayne] and his brother [Pete] went to the football game together. [James] and his wife [Frances] baked some cookies. [Frances]'s grandson [Wayne] loved the cookies very much.
('Frances', 'Pete')
[James] and his wife [Frances] baked some cookies. [Frances]'s grandson [Wayne] loved the cookies very much. [Wayne] and his brother [Pete] went to the football game together.
[{('Frances', 'grandson', 'Pete'): [('Frances', 'husband', 'James'), ('James', 'grandson', 'Pete')]}, {('James', 'grandson', 'Pete'): [('James', 'grandson', 'Wayne'), ('Wayne', 'brother', 'Pete')]}]
['husband', 'grandson', 'brother']