[James] and his wife [Frances] had been arguing all afternoon, but in the evening, [James] was very pleased to see his granddaughter [Marie] and grandson [Bobby] as they arrived for dinner.
('Frances', 'Bobby')
[James] and his wife [Frances] had been arguing all afternoon, but in the evening, [James] was very pleased to see his granddaughter [Marie] and grandson [Bobby] as they arrived for dinner.
[{('Frances', 'grandson', 'Bobby'): [('Frances', 'husband', 'James'), ('James', 'grandson', 'Bobby')]}, {('James', 'grandson', 'Bobby'): [('James', 'granddaughter', 'Marie'), ('Marie', 'brother', 'Bobby')]}]
['husband', 'granddaughter', 'brother']