[Nicholas] asked his son [Milton] if he could help him with yard work and [Milton] said yes and brought his wife [Mary] with him to help.
('Mary', 'Nicholas')
[Nicholas] asked his son [Milton] if he could help him with yard work and [Milton] said yes and brought his wife [Mary] with him to help.
[{('Mary', 'father-in-law', 'Nicholas'): [('Mary', 'husband', 'Milton'), ('Milton', 'father', 'Nicholas')]}]
['husband', 'father']