[Angelica] took her father [Robert] to watch a movie together. [Elsie] is getting married. She is looking forward to her sister, [Angelica], attending. They have n't seen each other since [Angelica] relocated to California with her husband 3 years ago. [Angelica] and her sister [Elsie] went to the basketball game. [Angelica] invited [Allan] to meet them there, since she is his sister.
('Allan', 'Robert')
[Angelica] and her sister [Elsie] went to the basketball game. [Angelica] invited [Allan] to meet them there, since she is his sister. [Elsie] is getting married. She is looking forward to her sister, [Angelica], attending. They have n't seen each other since [Angelica] relocated to California with her husband 3 years ago. [Angelica] took her father [Robert] to watch a movie together.
[{('Allan', 'father', 'Robert'): [('Allan', 'sister', 'Elsie'), ('Elsie', 'father', 'Robert')]}, {('Elsie', 'father', 'Robert'): [('Elsie', 'sister', 'Angelica'), ('Angelica', 'father', 'Robert')]}, {('Allan', 'sister', 'Elsie'): [('Allan', 'sister', 'Angelica'), ('Angelica', 'sister', 'Elsie')]}]
['sister', 'sister', 'sister', 'father']