[Lillian] asks her sister [Theresa] for help looking for a gift. [Lillian] wants to buy something for her brother [Nicholas]'s birthday.
('Theresa', 'Nicholas')
[Lillian] asks her sister [Theresa] for help looking for a gift. [Lillian] wants to buy something for her brother [Nicholas]'s birthday.
[{('Theresa', 'brother', 'Nicholas'): [('Theresa', 'sister', 'Lillian'), ('Lillian', 'brother', 'Nicholas')]}]
['sister', 'brother']