[James]'s son, [Francisco], was ill and needed to be picked up at school. [James] hurried to his side. [Hugh] and [Francisco] are brothers who look nothing alike. [Hugh] was delighted to watch his son [Michael] steal third base in the Championship baseball game.
('James', 'Michael')
[James]'s son, [Francisco], was ill and needed to be picked up at school. [James] hurried to his side. [Hugh] and [Francisco] are brothers who look nothing alike. [Hugh] was delighted to watch his son [Michael] steal third base in the Championship baseball game.
[{('James', 'grandson', 'Michael'): [('James', 'son', 'Hugh'), ('Hugh', 'son', 'Michael')]}, {('James', 'son', 'Hugh'): [('James', 'son', 'Francisco'), ('Francisco', 'brother', 'Hugh')]}]
['son', 'brother', 'son']