[Nancy] and her father, [Clarence], went to the park. [Nancy]'s daughter, [Heidi], came too.
('Clarence', 'Heidi')
[Nancy] and her father, [Clarence], went to the park. [Nancy]'s daughter, [Heidi], came too.
[{('Clarence', 'granddaughter', 'Heidi'): [('Clarence', 'daughter', 'Nancy'), ('Nancy', 'daughter', 'Heidi')]}]
['daughter', 'daughter']