[Milton]'s father [Nicholas] gave his wife, [Mary], a gift card to her favorite restaurant for her birthday.
('Mary', 'Nicholas')
[Milton]'s father [Nicholas] gave his wife, [Mary], a gift card to her favorite restaurant for her birthday.
[{('Mary', 'father-in-law', 'Nicholas'): [('Mary', 'husband', 'Milton'), ('Milton', 'father', 'Nicholas')]}]
['husband', 'father']