[James] and his daughter, [Lena] go to concerts every week. [Lynn] and her son [Joseph] went to the zoo and then out to dinner yesterday. [Lynn] needed to go to the store. [Lynn] asked her sister [Lena] for a ride.
('James', 'Joseph')
[James] and his daughter, [Lena] go to concerts every week. [Lynn] needed to go to the store. [Lynn] asked her sister [Lena] for a ride. [Lynn] and her son [Joseph] went to the zoo and then out to dinner yesterday.
[{('James', 'grandson', 'Joseph'): [('James', 'daughter', 'Lynn'), ('Lynn', 'son', 'Joseph')]}, {('James', 'daughter', 'Lynn'): [('James', 'daughter', 'Lena'), ('Lena', 'sister', 'Lynn')]}]
['daughter', 'sister', 'son']