[Antonio] took his sons [Bobby] and [Aaron] to the park last weekend. [Beverly] who is David´s sister also went. [Beverly] was playing tag with her father [Harold].
('Aaron', 'Harold')
[Antonio] took his sons [Bobby] and [Aaron] to the park last weekend. [Beverly] who is David´s sister also went. [Beverly] was playing tag with her father [Harold].
[{('Aaron', 'grandfather', 'Harold'): [('Aaron', 'father', 'Antonio'), ('Antonio', 'father', 'Harold')]}, {('Aaron', 'father', 'Antonio'): [('Aaron', 'brother', 'Bobby'), ('Bobby', 'father', 'Antonio')]}, {('Antonio', 'father', 'Harold'): [('Antonio', 'sister', 'Beverly'), ('Beverly', 'father', 'Harold')]}]
['brother', 'father', 'sister', 'father']