[Louis] was proud of his son, [Samuel]. [Harold]'s son, [Louis], was ill and needed to be picked up at school. [Harold] hurried to his side. [Michael]'s father [Louis] is going to coach the team this year. [Louis] and his son [Michael] went to the park to look for different kinds of birds.
('Harold', 'Samuel')
[Harold]'s son, [Louis], was ill and needed to be picked up at school. [Harold] hurried to his side. [Michael]'s father [Louis] is going to coach the team this year. [Louis] and his son [Michael] went to the park to look for different kinds of birds. [Louis] was proud of his son, [Samuel].
[{('Harold', 'grandson', 'Samuel'): [('Harold', 'grandson', 'Michael'), ('Michael', 'brother', 'Samuel')]}, {('Harold', 'grandson', 'Michael'): [('Harold', 'son', 'Louis'), ('Louis', 'son', 'Michael')]}, {('Michael', 'brother', 'Samuel'): [('Michael', 'father', 'Louis'), ('Louis', 'son', 'Samuel')]}]
['son', 'son', 'father', 'son']