[Clarence] invited his daughter [Lillian] to the movies, but [Lillian] car was messed up, so her husband [George] took her.
('George', 'Clarence')
[Clarence] invited his daughter [Lillian] to the movies, but [Lillian] car was messed up, so her husband [George] took her.
[{('George', 'father-in-law', 'Clarence'): [('George', 'wife', 'Lillian'), ('Lillian', 'father', 'Clarence')]}]
['wife', 'father']