[Hugh] was happy that his son [Michael] was doing well in college. [Hugh] went hunting with his son, [Brandon]. [Michael] wanted to play at the park so his mother got her sister, [Lena], to take him.
('Brandon', 'Lena')
[Hugh] went hunting with his son, [Brandon]. [Hugh] was happy that his son [Michael] was doing well in college. [Michael] wanted to play at the park so his mother got her sister, [Lena], to take him.
[{('Brandon', 'aunt', 'Lena'): [('Brandon', 'father', 'Hugh'), ('Hugh', 'sister', 'Lena')]}, {('Hugh', 'sister', 'Lena'): [('Hugh', 'son', 'Michael'), ('Michael', 'aunt', 'Lena')]}]
['father', 'son', 'aunt']