[Tracy] loves to make cookies for her son. His name is [Bernardo]. [Antonio] went hunting with his son, [Bernardo]. [Antonio] made a grilled cheese for his son [Aaron]. [Aaron]'s brother [Bobby] ate a salad.
('Tracy', 'Bobby')
[Tracy] loves to make cookies for her son. His name is [Bernardo]. [Antonio] went hunting with his son, [Bernardo]. [Antonio] made a grilled cheese for his son [Aaron]. [Aaron]'s brother [Bobby] ate a salad.
[{('Tracy', 'son', 'Bobby'): [('Tracy', 'son', 'Aaron'), ('Aaron', 'brother', 'Bobby')]}, {('Tracy', 'son', 'Aaron'): [('Tracy', 'son', 'Bernardo'), ('Bernardo', 'brother', 'Aaron')]}, {('Bernardo', 'brother', 'Aaron'): [('Bernardo', 'father', 'Antonio'), ('Antonio', 'son', 'Aaron')]}]
['son', 'father', 'son', 'brother']