[Marie] loves cooking for her son. His name is [John]. [Mario] and his brother [John] fight a lot. Despite this, they still love each other very much. [Robert] and his son [Mario] went to the skating rink. [Robert] went to the park with his father, [Harold].
('Marie', 'Harold')
[Marie] loves cooking for her son. His name is [John]. [Mario] and his brother [John] fight a lot. Despite this, they still love each other very much. [Robert] and his son [Mario] went to the skating rink. [Robert] went to the park with his father, [Harold].
[{('Marie', 'father', 'Harold'): [('Marie', 'son', 'Mario'), ('Mario', 'grandfather', 'Harold')]}, {('Marie', 'son', 'Mario'): [('Marie', 'son', 'John'), ('John', 'brother', 'Mario')]}, {('Mario', 'grandfather', 'Harold'): [('Mario', 'father', 'Robert'), ('Robert', 'father', 'Harold')]}]
['son', 'brother', 'father', 'father']