[Tracy] has a son named [Bernardo]. [Emma] and her sister [Laura] went to the basketball game. [Emma] invited [Bernardo] to meet them there, since she is his sister. [Antonio] and his wife [Tracy] went to a baseball game today.
('Antonio', 'Laura')
[Antonio] and his wife [Tracy] went to a baseball game today. [Tracy] has a son named [Bernardo]. [Emma] and her sister [Laura] went to the basketball game. [Emma] invited [Bernardo] to meet them there, since she is his sister.
[{('Antonio', 'daughter', 'Laura'): [('Antonio', 'daughter', 'Emma'), ('Emma', 'sister', 'Laura')]}, {('Antonio', 'daughter', 'Emma'): [('Antonio', 'wife', 'Tracy'), ('Tracy', 'daughter', 'Emma')]}, {('Tracy', 'daughter', 'Emma'): [('Tracy', 'son', 'Bernardo'), ('Bernardo', 'sister', 'Emma')]}]
['wife', 'son', 'sister', 'sister']