[Michael] went to visit his sister [Mary] to the hospital last week. [Ashley] bought a new video game for her grandson [Michael].
('Ashley', 'Mary')
[Ashley] bought a new video game for her grandson [Michael]. [Michael] went to visit his sister [Mary] to the hospital last week.
[{('Ashley', 'granddaughter', 'Mary'): [('Ashley', 'grandson', 'Michael'), ('Michael', 'sister', 'Mary')]}]
['grandson', 'sister']