[Frances]'s son, [Wesley], has a son named [Charles]. [Charles] borrowed some money from his sister [Pamela].
('Frances', 'Pamela')
[Frances]'s son, [Wesley], has a son named [Charles]. [Charles] borrowed some money from his sister [Pamela].
[{('Frances', 'granddaughter', 'Pamela'): [('Frances', 'son', 'Wesley'), ('Wesley', 'daughter', 'Pamela')]}, {('Wesley', 'daughter', 'Pamela'): [('Wesley', 'son', 'Charles'), ('Charles', 'sister', 'Pamela')]}]
['son', 'son', 'sister']