[Mary] needed to ask her father [Nicholas] for a loan. [Milton] was sitting poolside with his wife [Mary].
('Milton', 'Nicholas')
[Milton] was sitting poolside with his wife [Mary]. [Mary] needed to ask her father [Nicholas] for a loan.
[{('Milton', 'father-in-law', 'Nicholas'): [('Milton', 'wife', 'Mary'), ('Mary', 'father', 'Nicholas')]}]
['wife', 'father']