[Joshua] wanted to buy his mother, [Frances], a birthday present. But he did n't know what to get her. [Frances] took her daughter [David] to the movies. [David]'s brother [Francisco] was glad because he had the house all to himself finally.
('Joshua', 'Francisco')
[Joshua] wanted to buy his mother, [Frances], a birthday present. But he did n't know what to get her. [Frances] took her daughter [David] to the movies. [David]'s brother [Francisco] was glad because he had the house all to himself finally.
[{('Joshua', 'brother', 'Francisco'): [('Joshua', 'sister', 'David'), ('David', 'brother', 'Francisco')]}, {('Joshua', 'sister', 'David'): [('Joshua', 'mother', 'Frances'), ('Frances', 'daughter', 'David')]}]
['mother', 'daughter', 'brother']