[Louis] went to pick up his son [Wayne] from soccer practice. [Wayne] was better at soccer compared to his brother [Michael], but [Michael]'s sister [Jennifer] was the best of the 3. [Samuel] asked his father, [Louis], to help him with his math homework. [Louis] could n't, because he was lousy at math himself.
('Samuel', 'Jennifer')
[Samuel] asked his father, [Louis], to help him with his math homework. [Louis] could n't, because he was lousy at math himself. [Louis] went to pick up his son [Wayne] from soccer practice. [Wayne] was better at soccer compared to his brother [Michael], but [Michael]'s sister [Jennifer] was the best of the 3.
[{('Samuel', 'sister', 'Jennifer'): [('Samuel', 'father', 'Louis'), ('Louis', 'daughter', 'Jennifer')]}, {('Louis', 'daughter', 'Jennifer'): [('Louis', 'son', 'Wayne'), ('Wayne', 'sister', 'Jennifer')]}, {('Wayne', 'sister', 'Jennifer'): [('Wayne', 'brother', 'Michael'), ('Michael', 'sister', 'Jennifer')]}]
['father', 'son', 'brother', 'sister']