[Wayne]'s sister [Theresa] asked him for some help planting her garden. [Wayne] liked to talk about his sister, [Lillian].
('Theresa', 'Lillian')
[Wayne]'s sister [Theresa] asked him for some help planting her garden. [Wayne] liked to talk about his sister, [Lillian].
[{('Theresa', 'sister', 'Lillian'): [('Theresa', 'brother', 'Wayne'), ('Wayne', 'sister', 'Lillian')]}]
['brother', 'sister']