[Hugh] and his father, [James], were having an argument. [James]'s son, [Joshua], tried to get them to settle down. [Joshua]'s son, [Don], did too.
('Hugh', 'Don')
[Hugh] and his father, [James], were having an argument. [James]'s son, [Joshua], tried to get them to settle down. [Joshua]'s son, [Don], did too.
[{('Hugh', 'nephew', 'Don'): [('Hugh', 'brother', 'Joshua'), ('Joshua', 'son', 'Don')]}, {('Hugh', 'brother', 'Joshua'): [('Hugh', 'father', 'James'), ('James', 'son', 'Joshua')]}]
['father', 'son', 'son']