[Nancy]'s daughter, [Louise], just graduated high school. [Heidi] loved her mother [Nancy]. She was heartbroken when she heard [Nancy] had suddenly passed away.
('Heidi', 'Louise')
[Heidi] loved her mother [Nancy]. She was heartbroken when she heard [Nancy] had suddenly passed away. [Nancy]'s daughter, [Louise], just graduated high school.
[{('Heidi', 'sister', 'Louise'): [('Heidi', 'mother', 'Nancy'), ('Nancy', 'daughter', 'Louise')]}]
['mother', 'daughter']