[Hugh] had taken his son [Michael] to the batting cages to practice for his big game. While watching his son, [Hugh] could n't help but think about when he used to go to the batting cages with his father [James]. [Michael] went fishing with his uncle [Joshua].
('James', 'Joshua')
[Hugh] had taken his son [Michael] to the batting cages to practice for his big game. While watching his son, [Hugh] could n't help but think about when he used to go to the batting cages with his father [James]. [Michael] went fishing with his uncle [Joshua].
[{('James', 'son', 'Joshua'): [('James', 'son', 'Hugh'), ('Hugh', 'brother', 'Joshua')]}, {('Hugh', 'brother', 'Joshua'): [('Hugh', 'son', 'Michael'), ('Michael', 'uncle', 'Joshua')]}]
['son', 'son', 'uncle']