[Nancy] drove all the way from her little town to see her brother [Dale]'s family. It's a big day in [Dale]'s family. His son [Tony] is getting married.
('Nancy', 'Tony')
[Nancy] drove all the way from her little town to see her brother [Dale]'s family. It's a big day in [Dale]'s family. His son [Tony] is getting married.
[{('Nancy', 'nephew', 'Tony'): [('Nancy', 'brother', 'Dale'), ('Dale', 'son', 'Tony')]}]
['brother', 'son']