[Erika] asked her mother, [Tracy], if she could go out with her tonight. [Tracy] said she could n't, she had to care for her sick father, [Harold]. [Harold]'s son [Antonio] is in the hospital. [Antonio]'s brother [Robert] accidentally hit him with a hammer.
('Erika', 'Robert')
[Erika] asked her mother, [Tracy], if she could go out with her tonight. [Tracy] said she could n't, she had to care for her sick father, [Harold]. [Harold]'s son [Antonio] is in the hospital. [Antonio]'s brother [Robert] accidentally hit him with a hammer.
[{('Erika', 'uncle', 'Robert'): [('Erika', 'mother', 'Tracy'), ('Tracy', 'brother', 'Robert')]}, {('Tracy', 'brother', 'Robert'): [('Tracy', 'father', 'Harold'), ('Harold', 'son', 'Robert')]}, {('Harold', 'son', 'Robert'): [('Harold', 'son', 'Antonio'), ('Antonio', 'brother', 'Robert')]}]
['mother', 'father', 'son', 'brother']