[John] and his son [Adan] went to the skating rink. [John] met his brother [Ernest] for drinks after work.
('Adan', 'Ernest')
[John] and his son [Adan] went to the skating rink. [John] met his brother [Ernest] for drinks after work.
[{('Adan', 'uncle', 'Ernest'): [('Adan', 'father', 'John'), ('John', 'brother', 'Ernest')]}]