[Frances] is the grandmother of her grandson, [Joseph] [Dolores] and her brother [Clarence] watched TV together. [Joseph] was invited to watch too, because [Dolores] is his sister.
('Frances', 'Clarence')
[Frances] is the grandmother of her grandson, [Joseph] [Dolores] and her brother [Clarence] watched TV together. [Joseph] was invited to watch too, because [Dolores] is his sister.
[{('Frances', 'grandson', 'Clarence'): [('Frances', 'granddaughter', 'Dolores'), ('Dolores', 'brother', 'Clarence')]}, {('Frances', 'granddaughter', 'Dolores'): [('Frances', 'grandson', 'Joseph'), ('Joseph', 'sister', 'Dolores')]}]
['grandson', 'sister', 'brother']