[Dale] and his son [James] went to the store to by bread. [Ashley] took her son [Dale] to the mall to shop for school clothes.
('Ashley', 'James')
[Ashley] took her son [Dale] to the mall to shop for school clothes. [Dale] and his son [James] went to the store to by bread.
[{('Ashley', 'grandson', 'James'): [('Ashley', 'son', 'Dale'), ('Dale', 'son', 'James')]}]
['son', 'son']