[Nicholas] likes to take his daughter [Emily] fishing. [Milton] went to the park with his father, [Nicholas].
('Milton', 'Emily')
[Milton] went to the park with his father, [Nicholas]. [Nicholas] likes to take his daughter [Emily] fishing.
[{('Milton', 'sister', 'Emily'): [('Milton', 'father', 'Nicholas'), ('Nicholas', 'daughter', 'Emily')]}]
['father', 'daughter']