[David] and her sister [Francisco] went to the ice cream shop. [Richard]'s sister, [Anna], participated in the dance contest. [Anna] bought some shoes for her father [Francisco].
('Richard', 'David')
[Richard]'s sister, [Anna], participated in the dance contest. [Anna] bought some shoes for her father [Francisco]. [David] and her sister [Francisco] went to the ice cream shop.
[{('Richard', 'aunt', 'David'): [('Richard', 'father', 'Francisco'), ('Francisco', 'sister', 'David')]}, {('Richard', 'father', 'Francisco'): [('Richard', 'sister', 'Anna'), ('Anna', 'father', 'Francisco')]}]
['sister', 'father', 'sister']