[Jeff]'s wife, [Heidi], was eager to start her new job. [Nancy] drove her son [Jeff] to his soccer game.
('Nancy', 'Heidi')
[Nancy] drove her son [Jeff] to his soccer game. [Jeff]'s wife, [Heidi], was eager to start her new job.
[{('Nancy', 'daughter-in-law', 'Heidi'): [('Nancy', 'son', 'Jeff'), ('Jeff', 'wife', 'Heidi')]}]
['son', 'wife']