[Beverly] took her son [Wayne] to the park for the afternoon. [Louis] received a letter in the mail from his sister [Marie]. When he opened it, he realized the letter was actually for his son [Paul]. [Wayne] took his brother [Paul] to Las Vegas to go gambling.
('Beverly', 'Marie')
[Beverly] took her son [Wayne] to the park for the afternoon. [Wayne] took his brother [Paul] to Las Vegas to go gambling. [Louis] received a letter in the mail from his sister [Marie]. When he opened it, he realized the letter was actually for his son [Paul].
[{('Beverly', 'sister', 'Marie'): [('Beverly', 'son', 'Paul'), ('Paul', 'aunt', 'Marie')]}, {('Beverly', 'son', 'Paul'): [('Beverly', 'son', 'Wayne'), ('Wayne', 'brother', 'Paul')]}, {('Paul', 'aunt', 'Marie'): [('Paul', 'father', 'Louis'), ('Louis', 'sister', 'Marie')]}]
['son', 'brother', 'father', 'sister']