[Pamela] and her sister [Martha] went out to eat with [Pamela]'s father, [Wesley]. [Frances] and her son [Wesley] went to the zoo and then out to dinner yesterday.
('Frances', 'Martha')
[Frances] and her son [Wesley] went to the zoo and then out to dinner yesterday. [Pamela] and her sister [Martha] went out to eat with [Pamela]'s father, [Wesley].
[{('Frances', 'granddaughter', 'Martha'): [('Frances', 'son', 'Wesley'), ('Wesley', 'daughter', 'Martha')]}, {('Wesley', 'daughter', 'Martha'): [('Wesley', 'daughter', 'Pamela'), ('Pamela', 'sister', 'Martha')]}]
['son', 'daughter', 'sister']