[Wesley] and his brother [Francisco] were playing tag in the park. [James] met his son [Wesley] for dinner. Unfortunately [James]'s son [Hugh] could not attend.
('Hugh', 'Francisco')
[James] met his son [Wesley] for dinner. Unfortunately [James]'s son [Hugh] could not attend. [Wesley] and his brother [Francisco] were playing tag in the park.
[{('Hugh', 'brother', 'Francisco'): [('Hugh', 'brother', 'Wesley'), ('Wesley', 'brother', 'Francisco')]}, {('Hugh', 'brother', 'Wesley'): [('Hugh', 'father', 'James'), ('James', 'son', 'Wesley')]}]
['father', 'son', 'brother']