[John] and his sister, [Elsie], went shopping. [Elsie] asked her mom [Marie] if she wanted anything, but [Marie] said no. [Michelle] loves her brother [John]. [Michelle] is n't too fond of her brother [Allan] though.
('Allan', 'Marie')
[Michelle] loves her brother [John]. [Michelle] is n't too fond of her brother [Allan] though. [John] and his sister, [Elsie], went shopping. [Elsie] asked her mom [Marie] if she wanted anything, but [Marie] said no.
[{('Allan', 'mother', 'Marie'): [('Allan', 'brother', 'John'), ('John', 'mother', 'Marie')]}, {('John', 'mother', 'Marie'): [('John', 'sister', 'Elsie'), ('Elsie', 'mother', 'Marie')]}, {('Allan', 'brother', 'John'): [('Allan', 'sister', 'Michelle'), ('Michelle', 'brother', 'John')]}]
['sister', 'brother', 'sister', 'mother']