[Chris] and [Charles], two brothers, are visiting [James] and his wife [Frances] for the holidays because [Chris] is the loving grandson of [James].
('Frances', 'Charles')
[Chris] and [Charles], two brothers, are visiting [James] and his wife [Frances] for the holidays because [Chris] is the loving grandson of [James].
[{('Frances', 'grandson', 'Charles'): [('Frances', 'husband', 'James'), ('James', 'grandson', 'Charles')]}, {('James', 'grandson', 'Charles'): [('James', 'grandson', 'Chris'), ('Chris', 'brother', 'Charles')]}]
['husband', 'grandson', 'brother']