[Mario]'s dad [Robert] is the CEO of the company. [Harold] loved taking his grandson [Mario] for ice cream. [Marie] is staying with her son, [Ronald] while her husband, [Robert] is out if town.
('Harold', 'Ronald')
[Harold] loved taking his grandson [Mario] for ice cream. [Mario]'s dad [Robert] is the CEO of the company. [Marie] is staying with her son, [Ronald] while her husband, [Robert] is out if town.
[{('Harold', 'grandson', 'Ronald'): [('Harold', 'grandson', 'Mario'), ('Mario', 'brother', 'Ronald')]}, {('Mario', 'brother', 'Ronald'): [('Mario', 'father', 'Robert'), ('Robert', 'son', 'Ronald')]}, {('Robert', 'son', 'Ronald'): [('Robert', 'wife', 'Marie'), ('Marie', 'son', 'Ronald')]}]
['grandson', 'father', 'wife', 'son']