[Frances] drove her son [Joshua] to his soccer game. [Bobby] wanted to buy a great gift for his mom, [David], so he asked her brother, [Joshua], for advice.
('Frances', 'Bobby')
[Frances] drove her son [Joshua] to his soccer game. [Bobby] wanted to buy a great gift for his mom, [David], so he asked her brother, [Joshua], for advice.
[{('Frances', 'grandson', 'Bobby'): [('Frances', 'daughter', 'David'), ('David', 'son', 'Bobby')]}, {('Frances', 'daughter', 'David'): [('Frances', 'son', 'Joshua'), ('Joshua', 'sister', 'David')]}]
['son', 'sister', 'son']