[Tracy] could n't wait for the surprise birthday party that she was throwing for her brother [Louis] next weekend. [Pedro] played board games with his son [Jeffrey]. [Tracy] asked [Pedro], her brother, if she could join. [Jeffrey]'s uncle, [Robert], is finally getting help for his alcoholism.
('Louis', 'Robert')
[Tracy] could n't wait for the surprise birthday party that she was throwing for her brother [Louis] next weekend. [Pedro] played board games with his son [Jeffrey]. [Tracy] asked [Pedro], her brother, if she could join. [Jeffrey]'s uncle, [Robert], is finally getting help for his alcoholism.
[{('Louis', 'brother', 'Robert'): [('Louis', 'brother', 'Pedro'), ('Pedro', 'brother', 'Robert')]}, {('Pedro', 'brother', 'Robert'): [('Pedro', 'son', 'Jeffrey'), ('Jeffrey', 'uncle', 'Robert')]}, {('Louis', 'brother', 'Pedro'): [('Louis', 'sister', 'Tracy'), ('Tracy', 'brother', 'Pedro')]}]
['sister', 'brother', 'son', 'uncle']