[Antonio] helped his brother, [Robert], study for the chemistry exam. [Rebecca] and her mother [Dorothy] went dress shopping on Saturday. [Harold] is a man with a son named [Robert]. [Harold] bought his daughter, [Dorothy], flowers.
('Antonio', 'Rebecca')
[Antonio] helped his brother, [Robert], study for the chemistry exam. [Harold] is a man with a son named [Robert]. [Harold] bought his daughter, [Dorothy], flowers. [Rebecca] and her mother [Dorothy] went dress shopping on Saturday.
[{('Antonio', 'niece', 'Rebecca'): [('Antonio', 'sister', 'Dorothy'), ('Dorothy', 'daughter', 'Rebecca')]}, {('Antonio', 'sister', 'Dorothy'): [('Antonio', 'brother', 'Robert'), ('Robert', 'sister', 'Dorothy')]}, {('Robert', 'sister', 'Dorothy'): [('Robert', 'father', 'Harold'), ('Harold', 'daughter', 'Dorothy')]}]
['brother', 'father', 'daughter', 'daughter']