[Joshua] took his wife, [Lynn], to see his daughter, [Dolores]. [Dolores]'s grandfather, [James] was ill and could n't meet.
('Lynn', 'James')
[Joshua] took his wife, [Lynn], to see his daughter, [Dolores]. [Dolores]'s grandfather, [James] was ill and could n't meet.
[{('Lynn', 'father-in-law', 'James'): [('Lynn', 'husband', 'Joshua'), ('Joshua', 'father', 'James')]}, {('Joshua', 'father', 'James'): [('Joshua', 'daughter', 'Dolores'), ('Dolores', 'grandfather', 'James')]}]
['husband', 'daughter', 'grandfather']