[Amy] asked her husband, [Nicholas], to help her son, [Glen] with his homework.
('Nicholas', 'Glen')
[Amy] asked her husband, [Nicholas], to help her son, [Glen] with his homework.
[{('Nicholas', 'son', 'Glen'): [('Nicholas', 'wife', 'Amy'), ('Amy', 'son', 'Glen')]}]
['wife', 'son']