[Lena] and her brother [Joshua] are taking [Lena]'s son [Charles] to the park. [Charles]'s uncle, [Hugh], stubbed his toe. [Charles] told him he should be more careful.
('Joshua', 'Hugh')
[Lena] and her brother [Joshua] are taking [Lena]'s son [Charles] to the park. [Charles]'s uncle, [Hugh], stubbed his toe. [Charles] told him he should be more careful.
[{('Joshua', 'brother', 'Hugh'): [('Joshua', 'sister', 'Lena'), ('Lena', 'brother', 'Hugh')]}, {('Lena', 'brother', 'Hugh'): [('Lena', 'son', 'Charles'), ('Charles', 'uncle', 'Hugh')]}]
['sister', 'son', 'uncle']