[Antonio] does not know he has a son named [Kevin]. [Tracy] went with her husband [Antonio] to get a nice dinner for their anniversary. [Erika] is a sister of [Kevin]. [Tracy] was upset because her husband, [Antonio], did n't buy her flowers for their wedding anniversary.
('Antonio', 'Erika')
[Tracy] went with her husband [Antonio] to get a nice dinner for their anniversary. [Tracy] was upset because her husband, [Antonio], did n't buy her flowers for their wedding anniversary. [Antonio] does not know he has a son named [Kevin]. [Erika] is a sister of [Kevin].
[{('Antonio', 'daughter', 'Erika'): [('Antonio', 'wife', 'Tracy'), ('Tracy', 'daughter', 'Erika')]}, {('Tracy', 'daughter', 'Erika'): [('Tracy', 'son', 'Kevin'), ('Kevin', 'sister', 'Erika')]}, {('Tracy', 'son', 'Kevin'): [('Tracy', 'husband', 'Antonio'), ('Antonio', 'son', 'Kevin')]}]
['wife', 'husband', 'son', 'sister']