[Margaret] was eating dinner with her sister [Renee]. [Margaret]'s brother [Adan] was n't invited.
('Renee', 'Adan')
[Margaret] was eating dinner with her sister [Renee]. [Margaret]'s brother [Adan] was n't invited.
[{('Renee', 'brother', 'Adan'): [('Renee', 'sister', 'Margaret'), ('Margaret', 'brother', 'Adan')]}]