[Marie] treasures her son, [Allan]. She recently attended his high school graduation and it was the proudest day of her life. [Tracy] was eager to see her niece, [Elsie]. They had n't seen each other in ages [Robert] bought a dress for his daughter [Elsie]. [Allan] went to the park with his father, [Robert].
('Marie', 'Tracy')
[Marie] treasures her son, [Allan]. She recently attended his high school graduation and it was the proudest day of her life. [Allan] went to the park with his father, [Robert]. [Robert] bought a dress for his daughter [Elsie]. [Tracy] was eager to see her niece, [Elsie]. They had n't seen each other in ages
[{('Marie', 'sister', 'Tracy'): [('Marie', 'son', 'Allan'), ('Allan', 'aunt', 'Tracy')]}, {('Allan', 'aunt', 'Tracy'): [('Allan', 'father', 'Robert'), ('Robert', 'sister', 'Tracy')]}, {('Robert', 'sister', 'Tracy'): [('Robert', 'daughter', 'Elsie'), ('Elsie', 'aunt', 'Tracy')]}]
['son', 'father', 'daughter', 'aunt']