[Robert] proudly walked his daughter [Angelica] down the aisle at her wedding. [Marie]'s son [Mario] went on a hiking trip with her husband [Robert]. [Mario] always loved to go to the arcade with his aunt, [Tracy].
('Angelica', 'Tracy')
[Robert] proudly walked his daughter [Angelica] down the aisle at her wedding. [Marie]'s son [Mario] went on a hiking trip with her husband [Robert]. [Mario] always loved to go to the arcade with his aunt, [Tracy].
[{('Angelica', 'aunt', 'Tracy'): [('Angelica', 'father', 'Robert'), ('Robert', 'sister', 'Tracy')]}, {('Robert', 'sister', 'Tracy'): [('Robert', 'son', 'Mario'), ('Mario', 'aunt', 'Tracy')]}, {('Robert', 'son', 'Mario'): [('Robert', 'wife', 'Marie'), ('Marie', 'son', 'Mario')]}]
['father', 'wife', 'son', 'aunt']