[Clarence] was planning a trip to see his daughter, [Nancy]. [Nancy]'s daughter, [Linda], helped with the details.
('Clarence', 'Linda')
[Clarence] was planning a trip to see his daughter, [Nancy]. [Nancy]'s daughter, [Linda], helped with the details.
[{('Clarence', 'granddaughter', 'Linda'): [('Clarence', 'daughter', 'Nancy'), ('Nancy', 'daughter', 'Linda')]}]
['daughter', 'daughter']