[Hugh] and his father, [James], were having a disagreement, so they asked [Bobby], [Hugh]'s son, to settle it for them. [David] likes taking her son [Bobby] to school.
('David', 'James')
[David] likes taking her son [Bobby] to school. [Hugh] and his father, [James], were having a disagreement, so they asked [Bobby], [Hugh]'s son, to settle it for them.
[{('David', 'father', 'James'): [('David', 'son', 'Bobby'), ('Bobby', 'grandfather', 'James')]}, {('Bobby', 'grandfather', 'James'): [('Bobby', 'father', 'Hugh'), ('Hugh', 'father', 'James')]}]
['son', 'father', 'father']