[Nancy] had lunch with her brother [Dale]. She told him about her son [Kevin] getting a scholarship.
('Dale', 'Kevin')
[Nancy] had lunch with her brother [Dale]. She told him about her son [Kevin] getting a scholarship.
[{('Dale', 'nephew', 'Kevin'): [('Dale', 'sister', 'Nancy'), ('Nancy', 'son', 'Kevin')]}]
['sister', 'son']