[Louis] was upset at his brother [Robert]. [Louis]'s son [Samuel] and [Samuel]'s sister [Nettie] tried to calm him down. [Robert] and his sister [Tracy] are going for a walk.
('Nettie', 'Tracy')
[Louis] was upset at his brother [Robert]. [Louis]'s son [Samuel] and [Samuel]'s sister [Nettie] tried to calm him down. [Robert] and his sister [Tracy] are going for a walk.
[{('Nettie', 'aunt', 'Tracy'): [('Nettie', 'father', 'Louis'), ('Louis', 'sister', 'Tracy')]}, {('Louis', 'sister', 'Tracy'): [('Louis', 'brother', 'Robert'), ('Robert', 'sister', 'Tracy')]}, {('Nettie', 'father', 'Louis'): [('Nettie', 'brother', 'Samuel'), ('Samuel', 'father', 'Louis')]}]
['brother', 'father', 'brother', 'sister']