[Travis] asked his son, [Dale], to help paint his house. [Ashley] read her son [Dale] a bedtime story every night.
('Ashley', 'Travis')
[Ashley] read her son [Dale] a bedtime story every night. [Travis] asked his son, [Dale], to help paint his house.
[{('Ashley', 'grandson', 'Travis'): [('Ashley', 'son', 'Dale'), ('Dale', 'son', 'Travis')]}]
['son', 'son']