[Jennifer]'s father, [Nicholas], and her husband [Michael] went to the store to pick up some more beer.
('Michael', 'Nicholas')
[Jennifer]'s father, [Nicholas], and her husband [Michael] went to the store to pick up some more beer.
[{('Michael', 'father-in-law', 'Nicholas'): [('Michael', 'wife', 'Jennifer'), ('Jennifer', 'father', 'Nicholas')]}]
['wife', 'father']