[Louis]'s wife, [Beverly], was heartbroken. Her son, [Samuel], was ill, and doctors said he was likely to die. [Beverly] drives her daughter, [Karen], to the elementary school. [Beverly]'s son, [Samuel], goes to the middle school.
('Louis', 'Karen')
[Louis]'s wife, [Beverly], was heartbroken. Her son, [Samuel], was ill, and doctors said he was likely to die. [Beverly] drives her daughter, [Karen], to the elementary school. [Beverly]'s son, [Samuel], goes to the middle school.
[{('Louis', 'daughter', 'Karen'): [('Louis', 'son', 'Samuel'), ('Samuel', 'sister', 'Karen')]}, {('Louis', 'son', 'Samuel'): [('Louis', 'wife', 'Beverly'), ('Beverly', 'son', 'Samuel')]}, {('Samuel', 'sister', 'Karen'): [('Samuel', 'mother', 'Beverly'), ('Beverly', 'daughter', 'Karen')]}]
['wife', 'son', 'mother', 'daughter']