[John] came to visit his wife [Andrea] for lunch today. [John]'s dad [George] is the CEO of the company.
('Andrea', 'George')
[John] came to visit his wife [Andrea] for lunch today. [John]'s dad [George] is the CEO of the company.
[{('Andrea', 'father-in-law', 'George'): [('Andrea', 'husband', 'John'), ('John', 'father', 'George')]}]
['husband', 'father']