[James] was happy to see his daughter [David] again. [David] brought her two children, [Marie] and [Johnson], to visit her father.
('James', 'Johnson')
[James] was happy to see his daughter [David] again. [David] brought her two children, [Marie] and [Johnson], to visit her father.
[{('James', 'grandson', 'Johnson'): [('James', 'granddaughter', 'Marie'), ('Marie', 'brother', 'Johnson')]}, {('Marie', 'brother', 'Johnson'): [('Marie', 'mother', 'David'), ('David', 'son', 'Johnson')]}]
['granddaughter', 'mother', 'son']