[Joshua] asked his father, [James], to help him with his math homework. [James] could n't, because he was lousy at math himself. [Vanetta] was celebrating her birthday with her mother [David]. [David]'s brother [Joshua] was going to be the star in the new show.
('Vanetta', 'James')
[Vanetta] was celebrating her birthday with her mother [David]. [David]'s brother [Joshua] was going to be the star in the new show. [Joshua] asked his father, [James], to help him with his math homework. [James] could n't, because he was lousy at math himself.
[{('Vanetta', 'grandfather', 'James'): [('Vanetta', 'mother', 'David'), ('David', 'father', 'James')]}, {('David', 'father', 'James'): [('David', 'brother', 'Joshua'), ('Joshua', 'father', 'James')]}]
['mother', 'brother', 'father']