[Clarence]'s brother, [Don], is important to him. [Clarence]'s mom, [Lynn], cares for both of them. [Hugh] and his sister [Lynn] went to the park.
('Hugh', 'Don')
[Hugh] and his sister [Lynn] went to the park. [Clarence]'s brother, [Don], is important to him. [Clarence]'s mom, [Lynn], cares for both of them.
[{('Hugh', 'nephew', 'Don'): [('Hugh', 'sister', 'Lynn'), ('Lynn', 'son', 'Don')]}, {('Lynn', 'son', 'Don'): [('Lynn', 'son', 'Clarence'), ('Clarence', 'brother', 'Don')]}]
['sister', 'son', 'brother']