[James] went to the park with his sister, [Charlotte], and his father, [Dale]. The three of them had a wonderful time there.
('Charlotte', 'Dale')
[James] went to the park with his sister, [Charlotte], and his father, [Dale]. The three of them had a wonderful time there.
[{('Charlotte', 'father', 'Dale'): [('Charlotte', 'brother', 'James'), ('James', 'father', 'Dale')]}]
['brother', 'father']