[Dale] called his brother [Nicholas] and invited him to his son [Nicolas]'s football game.
('Nicolas', 'Nicholas')
[Dale] called his brother [Nicholas] and invited him to his son [Nicolas]'s football game.
[{('Nicolas', 'uncle', 'Nicholas'): [('Nicolas', 'father', 'Dale'), ('Dale', 'brother', 'Nicholas')]}]
['father', 'brother']