[Robert] is washing clothes with his daughter [Elsie]. [Elsie]'s sister [Angelica] is folding clothes. [Antonio] likes playing catch with his sister [Dorothy], but his brother [Robert] never wants to play.
('Dorothy', 'Angelica')
[Antonio] likes playing catch with his sister [Dorothy], but his brother [Robert] never wants to play. [Robert] is washing clothes with his daughter [Elsie]. [Elsie]'s sister [Angelica] is folding clothes.
[{('Dorothy', 'niece', 'Angelica'): [('Dorothy', 'brother', 'Robert'), ('Robert', 'daughter', 'Angelica')]}, {('Dorothy', 'brother', 'Robert'): [('Dorothy', 'brother', 'Antonio'), ('Antonio', 'brother', 'Robert')]}, {('Robert', 'daughter', 'Angelica'): [('Robert', 'daughter', 'Elsie'), ('Elsie', 'sister', 'Angelica')]}]
['brother', 'brother', 'daughter', 'sister']