[Dale]'s son [Nicolas] is in the hospital. [Nicolas]'s brother [Travis] accidentally hit him with a hammer.
('Dale', 'Travis')
[Dale]'s son [Nicolas] is in the hospital. [Nicolas]'s brother [Travis] accidentally hit him with a hammer.
[{('Dale', 'son', 'Travis'): [('Dale', 'son', 'Nicolas'), ('Nicolas', 'brother', 'Travis')]}]
['son', 'brother']