[Joseph] asked his son, [Joshua], to help paint his house. [James] is a benevolent grandfather, and [Joseph] is his young grandson. [James] took his son [Hugh] to soccer practice.
('Joshua', 'Hugh')
[Joseph] asked his son, [Joshua], to help paint his house. [James] is a benevolent grandfather, and [Joseph] is his young grandson. [James] took his son [Hugh] to soccer practice.
[{('Joshua', 'brother', 'Hugh'): [('Joshua', 'father', 'James'), ('James', 'son', 'Hugh')]}, {('Joshua', 'father', 'James'): [('Joshua', 'son', 'Joseph'), ('Joseph', 'grandfather', 'James')]}]
['son', 'grandfather', 'son']