[Nicholas] took his daughter [Mary] to the store [Amy] went to dinner with her husband [Nicholas].
('Amy', 'Mary')
[Amy] went to dinner with her husband [Nicholas]. [Nicholas] took his daughter [Mary] to the store
[{('Amy', 'daughter', 'Mary'): [('Amy', 'husband', 'Nicholas'), ('Nicholas', 'daughter', 'Mary')]}]
['husband', 'daughter']