[Pamela] was playing in the sandbox with her brother [Chris]. [Wesley] received a present from his mother [Frances]. He did n't want it, though, so he decided to give it to his son [Chris].
('Pamela', 'Frances')
[Pamela] was playing in the sandbox with her brother [Chris]. [Wesley] received a present from his mother [Frances]. He did n't want it, though, so he decided to give it to his son [Chris].
[{('Pamela', 'grandmother', 'Frances'): [('Pamela', 'brother', 'Chris'), ('Chris', 'grandmother', 'Frances')]}, {('Chris', 'grandmother', 'Frances'): [('Chris', 'father', 'Wesley'), ('Wesley', 'mother', 'Frances')]}]
['brother', 'father', 'mother']