[Lena] was playing in the sandbox with her brother [Joshua]. [Hugh] was trying to get the attention of his father [James]. [James] was busy paying attention to his other son [Joshua], unfortunately.
('Lena', 'Hugh')
[Lena] was playing in the sandbox with her brother [Joshua]. [Hugh] was trying to get the attention of his father [James]. [James] was busy paying attention to his other son [Joshua], unfortunately.
[{('Lena', 'brother', 'Hugh'): [('Lena', 'father', 'James'), ('James', 'son', 'Hugh')]}, {('Lena', 'father', 'James'): [('Lena', 'brother', 'Joshua'), ('Joshua', 'father', 'James')]}]
['brother', 'father', 'son']