[Douglas] and his uncle [Dale] are two of the best poker players in town. [Lillian] asked her son [Douglas] to help her fix her television.
('Lillian', 'Dale')
[Lillian] asked her son [Douglas] to help her fix her television. [Douglas] and his uncle [Dale] are two of the best poker players in town.
[{('Lillian', 'brother', 'Dale'): [('Lillian', 'son', 'Douglas'), ('Douglas', 'uncle', 'Dale')]}]
['son', 'uncle']