[Vanetta] went grocery shopping with her mother, [David]. [David]'s father [James] asked them to pick up milk for him. [Vanetta]'s father [Hugh] is taking her to a movie because she got good grades.
('Hugh', 'James')
[Vanetta]'s father [Hugh] is taking her to a movie because she got good grades. [Vanetta] went grocery shopping with her mother, [David]. [David]'s father [James] asked them to pick up milk for him.
[{('Hugh', 'father', 'James'): [('Hugh', 'daughter', 'Vanetta'), ('Vanetta', 'grandfather', 'James')]}, {('Vanetta', 'grandfather', 'James'): [('Vanetta', 'mother', 'David'), ('David', 'father', 'James')]}]
['daughter', 'mother', 'father']