[Harold] has a daughter names [Dorothy], she just turned 25. He also has a son, [Dorothy]'s brother [Robert], he just turned 20. [Bernardo] received a nice gift from his grandfather [Harold]. [Bernardo] was so proud he showed it to his mother [Tracy].
('Tracy', 'Robert')
[Bernardo] received a nice gift from his grandfather [Harold]. [Bernardo] was so proud he showed it to his mother [Tracy]. [Harold] has a daughter names [Dorothy], she just turned 25. He also has a son, [Dorothy]'s brother [Robert], he just turned 20.
[{('Tracy', 'brother', 'Robert'): [('Tracy', 'sister', 'Dorothy'), ('Dorothy', 'brother', 'Robert')]}, {('Tracy', 'sister', 'Dorothy'): [('Tracy', 'father', 'Harold'), ('Harold', 'daughter', 'Dorothy')]}, {('Tracy', 'father', 'Harold'): [('Tracy', 'son', 'Bernardo'), ('Bernardo', 'grandfather', 'Harold')]}]
['son', 'grandfather', 'daughter', 'brother']