[Ashley] drove her daughter [Amy] to the hospital. [Amy]'s son [Michael] showed up shortly after.
('Ashley', 'Michael')
[Ashley] drove her daughter [Amy] to the hospital. [Amy]'s son [Michael] showed up shortly after.
[{('Ashley', 'grandson', 'Michael'): [('Ashley', 'daughter', 'Amy'), ('Amy', 'son', 'Michael')]}]
['daughter', 'son']