[Ashley]'s grandson [Travis] was playing in the pool with his sister [Rosetta].
('Ashley', 'Rosetta')
[Ashley]'s grandson [Travis] was playing in the pool with his sister [Rosetta].
[{('Ashley', 'granddaughter', 'Rosetta'): [('Ashley', 'grandson', 'Travis'), ('Travis', 'sister', 'Rosetta')]}]
['grandson', 'sister']