[Pedro] called his brother [Louis] on the phone. He wanted to go out for some beers. [Robert] made plans for brunch with his brother, [Antonio]. [Pedro], his other brother, was sad he could n't make it. [Harold] who is [Louis]'s father grounded [Louis] after finding out what [Louis] had done at school.
('Harold', 'Antonio')
[Harold] who is [Louis]'s father grounded [Louis] after finding out what [Louis] had done at school. [Pedro] called his brother [Louis] on the phone. He wanted to go out for some beers. [Robert] made plans for brunch with his brother, [Antonio]. [Pedro], his other brother, was sad he could n't make it.
[{('Harold', 'son', 'Antonio'): [('Harold', 'son', 'Louis'), ('Louis', 'brother', 'Antonio')]}, {('Louis', 'brother', 'Antonio'): [('Louis', 'brother', 'Robert'), ('Robert', 'brother', 'Antonio')]}, {('Louis', 'brother', 'Robert'): [('Louis', 'brother', 'Pedro'), ('Pedro', 'brother', 'Robert')]}]
['son', 'brother', 'brother', 'brother']