[Beverly]'s son, [Samuel], has always wanted to be like [Louis], [Beverly]'s husband. [Samuel] went to a piano concert with his aunt [Dorothy]. [Robert] took his brother [Louis] out to get drinks after a long work week.
('Robert', 'Dorothy')
[Robert] took his brother [Louis] out to get drinks after a long work week. [Beverly]'s son, [Samuel], has always wanted to be like [Louis], [Beverly]'s husband. [Samuel] went to a piano concert with his aunt [Dorothy].
[{('Robert', 'sister', 'Dorothy'): [('Robert', 'brother', 'Louis'), ('Louis', 'sister', 'Dorothy')]}, {('Louis', 'sister', 'Dorothy'): [('Louis', 'son', 'Samuel'), ('Samuel', 'aunt', 'Dorothy')]}, {('Louis', 'son', 'Samuel'): [('Louis', 'wife', 'Beverly'), ('Beverly', 'son', 'Samuel')]}]
['brother', 'wife', 'son', 'aunt']