[Ronald] is a man with a brother named [Mario]. [Lizzie] adores her daughter [Marie]. [Marie] loves her very much, too. [Marie] took her daughter [Lizzie] to see her very first ballet performance. [Marie] read her son [Ronald] a bedtime story every night.
('Marie', 'Mario')
[Lizzie] adores her daughter [Marie]. [Marie] loves her very much, too. [Marie] took her daughter [Lizzie] to see her very first ballet performance. [Marie] read her son [Ronald] a bedtime story every night. [Ronald] is a man with a brother named [Mario].
[{('Marie', 'son', 'Mario'): [('Marie', 'daughter', 'Lizzie'), ('Lizzie', 'brother', 'Mario')]}, {('Lizzie', 'brother', 'Mario'): [('Lizzie', 'brother', 'Ronald'), ('Ronald', 'brother', 'Mario')]}, {('Lizzie', 'brother', 'Ronald'): [('Lizzie', 'mother', 'Marie'), ('Marie', 'son', 'Ronald')]}]
['daughter', 'mother', 'son', 'brother']