[James]'s daughter [Lena] had to stay home from work today. She stayed home to watch her son [Chris] who was sick. [Chris] liked to visit his uncle [Hugh]. They played ball together a lot.
('James', 'Hugh')
[James]'s daughter [Lena] had to stay home from work today. She stayed home to watch her son [Chris] who was sick. [Chris] liked to visit his uncle [Hugh]. They played ball together a lot.
[{('James', 'son', 'Hugh'): [('James', 'daughter', 'Lena'), ('Lena', 'brother', 'Hugh')]}, {('Lena', 'brother', 'Hugh'): [('Lena', 'son', 'Chris'), ('Chris', 'uncle', 'Hugh')]}]
['daughter', 'son', 'uncle']