[Dorothy] went to dinner with her brother [Antonio], who brought along her son [Bobby]. [Dorothy] has a son named [Roberto]. [Roberto] went to visit his aunt [Beverly] over the holiday and she gave him a present.
('Bobby', 'Beverly')
[Dorothy] went to dinner with her brother [Antonio], who brought along her son [Bobby]. [Dorothy] has a son named [Roberto]. [Roberto] went to visit his aunt [Beverly] over the holiday and she gave him a present.
[{('Bobby', 'aunt', 'Beverly'): [('Bobby', 'father', 'Antonio'), ('Antonio', 'sister', 'Beverly')]}, {('Antonio', 'sister', 'Beverly'): [('Antonio', 'sister', 'Dorothy'), ('Dorothy', 'sister', 'Beverly')]}, {('Dorothy', 'sister', 'Beverly'): [('Dorothy', 'son', 'Roberto'), ('Roberto', 'aunt', 'Beverly')]}]
['father', 'sister', 'son', 'aunt']