[Hugh] took his son [Bobby] out for ice cream. [Hugh]'s son [Johnson], was still in school. [Bobby] does n't like his grandfather [James]. The boy thinks he's old, and weird.
('Johnson', 'James')
[Hugh] took his son [Bobby] out for ice cream. [Hugh]'s son [Johnson], was still in school. [Bobby] does n't like his grandfather [James]. The boy thinks he's old, and weird.
[{('Johnson', 'grandfather', 'James'): [('Johnson', 'father', 'Hugh'), ('Hugh', 'father', 'James')]}, {('Hugh', 'father', 'James'): [('Hugh', 'son', 'Bobby'), ('Bobby', 'grandfather', 'James')]}]
['father', 'son', 'grandfather']