[Angelica] loves her brother [Mario]. [Angelica] visited her brother [Ronald] in New York. His sister [Lizzie] was there too. [Robert] and his son [Mario] went to the skating rink.
('Lizzie', 'Robert')
[Angelica] visited her brother [Ronald] in New York. His sister [Lizzie] was there too. [Angelica] loves her brother [Mario]. [Robert] and his son [Mario] went to the skating rink.
[{('Lizzie', 'father', 'Robert'): [('Lizzie', 'sister', 'Angelica'), ('Angelica', 'father', 'Robert')]}, {('Lizzie', 'sister', 'Angelica'): [('Lizzie', 'brother', 'Ronald'), ('Ronald', 'sister', 'Angelica')]}, {('Angelica', 'father', 'Robert'): [('Angelica', 'brother', 'Mario'), ('Mario', 'father', 'Robert')]}]
['brother', 'sister', 'brother', 'father']