[Nicholas] met his brother [Dale] for drinks after work. [Nicolas]'s father [Dale] is going to coach the team this year.
('Nicholas', 'Nicolas')
[Nicholas] met his brother [Dale] for drinks after work. [Nicolas]'s father [Dale] is going to coach the team this year.
[{('Nicholas', 'nephew', 'Nicolas'): [('Nicholas', 'brother', 'Dale'), ('Dale', 'son', 'Nicolas')]}]
['brother', 'son']