[Mary] went with her daughter [Stephanie] to pick up [Stephanie]'s husband [Jacob] at the airport. His flight arrived early.
('Jacob', 'Mary')
[Mary] went with her daughter [Stephanie] to pick up [Stephanie]'s husband [Jacob] at the airport. His flight arrived early.
[{('Jacob', 'mother-in-law', 'Mary'): [('Jacob', 'wife', 'Stephanie'), ('Stephanie', 'mother', 'Mary')]}]