[Nicholas] goes fishing with his son, [Michael] on Sundays and then comes home to a big dinner cooked by his wife, [Amy]
('Amy', 'Michael')
[Nicholas] goes fishing with his son, [Michael] on Sundays and then comes home to a big dinner cooked by his wife, [Amy]
[{('Amy', 'son', 'Michael'): [('Amy', 'husband', 'Nicholas'), ('Nicholas', 'son', 'Michael')]}]
['husband', 'son']