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