[Tracy]'s son, [Kevin], went with her to the store to buy candy for Halloween. [Robert] took his son [Mario] for boxing lessons. He felt the boy needed to toughen up. [Robert] always looked up to his big brother [Antonio] and wanted to be just like him. [Antonio] and his son [Kevin] went to the park to look for different kinds of birds.
('Tracy', 'Mario')
[Tracy]'s son, [Kevin], went with her to the store to buy candy for Halloween. [Antonio] and his son [Kevin] went to the park to look for different kinds of birds. [Robert] always looked up to his big brother [Antonio] and wanted to be just like him. [Robert] took his son [Mario] for boxing lessons. He felt the boy needed to toughen up.
[{('Tracy', 'nephew', 'Mario'): [('Tracy', 'brother', 'Robert'), ('Robert', 'son', 'Mario')]}, {('Tracy', 'brother', 'Robert'): [('Tracy', 'son', 'Kevin'), ('Kevin', 'uncle', 'Robert')]}, {('Kevin', 'uncle', 'Robert'): [('Kevin', 'father', 'Antonio'), ('Antonio', 'brother', 'Robert')]}]
['son', 'father', 'brother', 'son']