[Nicholas] and his son [Glen] went to the park to look for different kinds of birds. [Nicholas] has a sibling who is much younger than he is. They get along well and his name is [Dale].
('Glen', 'Dale')
[Nicholas] and his son [Glen] went to the park to look for different kinds of birds. [Nicholas] has a sibling who is much younger than he is. They get along well and his name is [Dale].
[{('Glen', 'uncle', 'Dale'): [('Glen', 'father', 'Nicholas'), ('Nicholas', 'brother', 'Dale')]}]
['father', 'brother']