[Angelica] was playing in the sandbox with her brother [Ronald]. [Mario] went to visit his sister [Lizzie] to the hospital last week. [Lizzie] asked [Harold], her grandfather, for some candy. [Mario] and his brother [Ronald] decided to play paintball on Saturday.
('Angelica', 'Harold')
[Angelica] was playing in the sandbox with her brother [Ronald]. [Mario] and his brother [Ronald] decided to play paintball on Saturday. [Mario] went to visit his sister [Lizzie] to the hospital last week. [Lizzie] asked [Harold], her grandfather, for some candy.
[{('Angelica', 'grandfather', 'Harold'): [('Angelica', 'brother', 'Mario'), ('Mario', 'grandfather', 'Harold')]}, {('Mario', 'grandfather', 'Harold'): [('Mario', 'sister', 'Lizzie'), ('Lizzie', 'grandfather', 'Harold')]}, {('Angelica', 'brother', 'Mario'): [('Angelica', 'brother', 'Ronald'), ('Ronald', 'brother', 'Mario')]}]
['brother', 'brother', 'sister', 'grandfather']