[Tracy]'s son, [Bobby], came over to her house for dinner. [Aaron], [Bobby]'s brother, came too. [Tracy] likes to make mini pies for her niece, [Elsie]. [Robert] took his daughter, [Elsie], to the Cavaliers game on Saturday.
('Robert', 'Aaron')
[Robert] took his daughter, [Elsie], to the Cavaliers game on Saturday. [Tracy] likes to make mini pies for her niece, [Elsie]. [Tracy]'s son, [Bobby], came over to her house for dinner. [Aaron], [Bobby]'s brother, came too.
[{('Robert', 'nephew', 'Aaron'): [('Robert', 'sister', 'Tracy'), ('Tracy', 'son', 'Aaron')]}, {('Robert', 'sister', 'Tracy'): [('Robert', 'daughter', 'Elsie'), ('Elsie', 'aunt', 'Tracy')]}, {('Tracy', 'son', 'Aaron'): [('Tracy', 'son', 'Bobby'), ('Bobby', 'brother', 'Aaron')]}]
['daughter', 'aunt', 'son', 'brother']