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