[Nicholas] who is [Michael]'s father grounded [Michael] after finding out what [Michael] had done at school. [Amy] and her husband [Nicholas] went to New York for the holidays, and had a great time there.
('Amy', 'Michael')
[Amy] and her husband [Nicholas] went to New York for the holidays, and had a great time there. [Nicholas] who is [Michael]'s father grounded [Michael] after finding out what [Michael] had done at school.
[{('Amy', 'son', 'Michael'): [('Amy', 'husband', 'Nicholas'), ('Nicholas', 'son', 'Michael')]}]
['husband', 'son']