[Michael] was playing checkers with his grandmother [Ashley], when he received a call from his sister [Mary].
('Ashley', 'Mary')
[Michael] was playing checkers with his grandmother [Ashley], when he received a call from his sister [Mary].
[{('Ashley', 'granddaughter', 'Mary'): [('Ashley', 'grandson', 'Michael'), ('Michael', 'sister', 'Mary')]}]
['grandson', 'sister']