[Martha] got a very nice gift from her grandfather [James]. This made [Martha]'s sister [Pamela] very jealous. [Pamela] is always around her brother [Chris].
('James', 'Chris')
[Martha] got a very nice gift from her grandfather [James]. This made [Martha]'s sister [Pamela] very jealous. [Pamela] is always around her brother [Chris].
[{('James', 'grandson', 'Chris'): [('James', 'granddaughter', 'Martha'), ('Martha', 'brother', 'Chris')]}, {('Martha', 'brother', 'Chris'): [('Martha', 'sister', 'Pamela'), ('Pamela', 'brother', 'Chris')]}]
['granddaughter', 'sister', 'brother']