[Allan] and his sister [Angelica] were twins. Still, they did n't look very much alike. [Robert] found his daughter, [Angelica], drunk and alone on the bathroom floor. [Elsie] took her sister [Angelica] out for dinner to celebrate her birthday. [Allan] and her sister [Angelica] decided to take a trip to Mexico together.
('Robert', 'Elsie')
[Robert] found his daughter, [Angelica], drunk and alone on the bathroom floor. [Allan] and her sister [Angelica] decided to take a trip to Mexico together. [Allan] and his sister [Angelica] were twins. Still, they did n't look very much alike. [Elsie] took her sister [Angelica] out for dinner to celebrate her birthday.
[{('Robert', 'daughter', 'Elsie'): [('Robert', 'son', 'Allan'), ('Allan', 'sister', 'Elsie')]}, {('Robert', 'son', 'Allan'): [('Robert', 'daughter', 'Angelica'), ('Angelica', 'brother', 'Allan')]}, {('Allan', 'sister', 'Elsie'): [('Allan', 'sister', 'Angelica'), ('Angelica', 'sister', 'Elsie')]}]
['daughter', 'brother', 'sister', 'sister']