[Lizzie] was playing in the sandbox with her brother [Mario]. [Robert] was so proud of his daughter, [Angelica], graduating at the top of her class. [Lizzie] and her mother [Marie] attended a play at the theater. [Marie]'s mom, [Angelica] got ready for the party.
('Robert', 'Mario')
[Robert] was so proud of his daughter, [Angelica], graduating at the top of her class. [Marie]'s mom, [Angelica] got ready for the party. [Lizzie] and her mother [Marie] attended a play at the theater. [Lizzie] was playing in the sandbox with her brother [Mario].
[{('Robert', 'son', 'Mario'): [('Robert', 'daughter', 'Angelica'), ('Angelica', 'brother', 'Mario')]}, {('Angelica', 'brother', 'Mario'): [('Angelica', 'mother', 'Marie'), ('Marie', 'son', 'Mario')]}, {('Marie', 'son', 'Mario'): [('Marie', 'daughter', 'Lizzie'), ('Lizzie', 'brother', 'Mario')]}]
['daughter', 'mother', 'daughter', 'brother']