[Dale] invited his daughter [Charlotte] to dinner. [Charlotte]'s husband [Nicolas] joined her.
('Nicolas', 'Dale')
[Dale] invited his daughter [Charlotte] to dinner. [Charlotte]'s husband [Nicolas] joined her.
[{('Nicolas', 'father-in-law', 'Dale'): [('Nicolas', 'wife', 'Charlotte'), ('Charlotte', 'father', 'Dale')]}]
['wife', 'father']