[Martha] called her father [Wesley] on the phone, but he was on the other line with his son [Charles]. He told [Martha] he'd call her back in a few minutes. [Martha] was happy to spend the holidays with her grandfather, [James].
('James', 'Charles')
[Martha] was happy to spend the holidays with her grandfather, [James]. [Martha] called her father [Wesley] on the phone, but he was on the other line with his son [Charles]. He told [Martha] he'd call her back in a few minutes.
[{('James', 'grandson', 'Charles'): [('James', 'granddaughter', 'Martha'), ('Martha', 'brother', 'Charles')]}, {('Martha', 'brother', 'Charles'): [('Martha', 'father', 'Wesley'), ('Wesley', 'son', 'Charles')]}]
['granddaughter', 'father', 'son']