[Robert] went hunting with his son, [John]. [Robert]'s dad [Harold] is the CEO of the company. [Marie]'s two sons, [Allan] and [John] are both attending college in the fall.
('Allan', 'Harold')
[Marie]'s two sons, [Allan] and [John] are both attending college in the fall. [Robert] went hunting with his son, [John]. [Robert]'s dad [Harold] is the CEO of the company.
[{('Allan', 'grandfather', 'Harold'): [('Allan', 'father', 'Robert'), ('Robert', 'father', 'Harold')]}, {('Allan', 'father', 'Robert'): [('Allan', 'brother', 'John'), ('John', 'father', 'Robert')]}, {('Allan', 'brother', 'John'): [('Allan', 'mother', 'Marie'), ('Marie', 'son', 'John')]}]
['mother', 'son', 'father', 'father']