[Marie] loves cooking for her son. His name is [Mario]. [Mario] and his brother [Ronald] both played soccer. [Mario] was faster, but [Ronald] had a better shot, so they complemented each other well. [Ronald]'s dad [Robert] is the CEO of the company. [Lizzie] was celebrating her birthday with her mother [Marie].
('Lizzie', 'Robert')
[Lizzie] was celebrating her birthday with her mother [Marie]. [Marie] loves cooking for her son. His name is [Mario]. [Mario] and his brother [Ronald] both played soccer. [Mario] was faster, but [Ronald] had a better shot, so they complemented each other well. [Ronald]'s dad [Robert] is the CEO of the company.
[{('Lizzie', 'father', 'Robert'): [('Lizzie', 'brother', 'Ronald'), ('Ronald', 'father', 'Robert')]}, {('Lizzie', 'brother', 'Ronald'): [('Lizzie', 'brother', 'Mario'), ('Mario', 'brother', 'Ronald')]}, {('Lizzie', 'brother', 'Mario'): [('Lizzie', 'mother', 'Marie'), ('Marie', 'son', 'Mario')]}]
['mother', 'son', 'brother', 'father']