[Dennis] went to the park with his father, [Nicholas]. [Jennifer] realized that her father [Nicholas] was gay.
('Dennis', 'Jennifer')
[Dennis] went to the park with his father, [Nicholas]. [Jennifer] realized that her father [Nicholas] was gay.
[{('Dennis', 'sister', 'Jennifer'): [('Dennis', 'father', 'Nicholas'), ('Nicholas', 'daughter', 'Jennifer')]}]
['father', 'daughter']