[Dale] always looked up to his big brother [Nicholas] and wanted to be just like him. [Nicholas] and his son [Dennis] went to the skating rink.
('Dennis', 'Dale')
[Nicholas] and his son [Dennis] went to the skating rink. [Dale] always looked up to his big brother [Nicholas] and wanted to be just like him.
[{('Dennis', 'uncle', 'Dale'): [('Dennis', 'father', 'Nicholas'), ('Nicholas', 'brother', 'Dale')]}]
['father', 'brother']