[Dale] and his brother [George] were rarely seen apart. [Andrea] invited her father [George] to her high school father daughter dance.
('Dale', 'Andrea')
[Dale] and his brother [George] were rarely seen apart. [Andrea] invited her father [George] to her high school father daughter dance.
[{('Dale', 'niece', 'Andrea'): [('Dale', 'brother', 'George'), ('George', 'daughter', 'Andrea')]}]
['brother', 'daughter']