[Hugh] went to the park with his father, [James]. [Joshua] played catch with his dad, [James] [Joshua] asked his mother [Frances] where babies came from. [Frances] told him they came from the stork.
('Hugh', 'Frances')
[Hugh] went to the park with his father, [James]. [Joshua] played catch with his dad, [James] [Joshua] asked his mother [Frances] where babies came from. [Frances] told him they came from the stork.
[{('Hugh', 'mother', 'Frances'): [('Hugh', 'brother', 'Joshua'), ('Joshua', 'mother', 'Frances')]}, {('Hugh', 'brother', 'Joshua'): [('Hugh', 'father', 'James'), ('James', 'son', 'Joshua')]}]
['father', 'son', 'mother']