[Bret] went to the park with his father, [John]. [Scott] and his son [Matthew] went to the park to look for different kinds of birds. [John] asked his father, [Scott] to help him build a birdhouse.
('Matthew', 'Bret')
[Scott] and his son [Matthew] went to the park to look for different kinds of birds. [John] asked his father, [Scott] to help him build a birdhouse. [Bret] went to the park with his father, [John].
[{('Matthew', 'nephew', 'Bret'): [('Matthew', 'brother', 'John'), ('John', 'son', 'Bret')]}, {('Matthew', 'brother', 'John'): [('Matthew', 'father', 'Scott'), ('Scott', 'son', 'John')]}]