[Amy] and her son [Michael] went shopping to get [Amy] 'husband [Nicholas] a birthday gift yesterday.
('Nicholas', 'Michael')
[Amy] and her son [Michael] went shopping to get [Amy] 'husband [Nicholas] a birthday gift yesterday.
[{('Nicholas', 'son', 'Michael'): [('Nicholas', 'wife', 'Amy'), ('Amy', 'son', 'Michael')]}]
['wife', 'son']