[James] was proud of his son, [Wesley]. [Frances]'s son [Wesley] and son [Francisco] went to the park together to play.
('James', 'Francisco')
[James] was proud of his son, [Wesley]. [Frances]'s son [Wesley] and son [Francisco] went to the park together to play.
[{('James', 'son', 'Francisco'): [('James', 'son', 'Wesley'), ('Wesley', 'brother', 'Francisco')]}, {('Wesley', 'brother', 'Francisco'): [('Wesley', 'mother', 'Frances'), ('Frances', 'son', 'Francisco')]}]
['son', 'mother', 'son']