[Antonio] went to the park with his sister, [Dorothy], and his father, [Harold]. The three of them had a wonderful time there. [Louis] and his daughter [Nicole] went to see [Louis]'s father [Harold] to see how he was feeling because he had been sick with the flu.
('Dorothy', 'Nicole')
[Antonio] went to the park with his sister, [Dorothy], and his father, [Harold]. The three of them had a wonderful time there. [Louis] and his daughter [Nicole] went to see [Louis]'s father [Harold] to see how he was feeling because he had been sick with the flu.
[{('Dorothy', 'niece', 'Nicole'): [('Dorothy', 'brother', 'Louis'), ('Louis', 'daughter', 'Nicole')]}, {('Dorothy', 'brother', 'Louis'): [('Dorothy', 'brother', 'Antonio'), ('Antonio', 'brother', 'Louis')]}, {('Antonio', 'brother', 'Louis'): [('Antonio', 'father', 'Harold'), ('Harold', 'son', 'Louis')]}]
['brother', 'father', 'son', 'daughter']