[Michelle] went fishing with her father [Robert] and brother [John] last weekend. They caught a dozen sea bass. [Dorothy] has a son called [Roberto]. Each day they go to the park after school. [John] ca n't stand his unfriendly aunt [Dorothy].
('Robert', 'Roberto')
[Michelle] went fishing with her father [Robert] and brother [John] last weekend. They caught a dozen sea bass. [John] ca n't stand his unfriendly aunt [Dorothy]. [Dorothy] has a son called [Roberto]. Each day they go to the park after school.
[{('Robert', 'nephew', 'Roberto'): [('Robert', 'sister', 'Dorothy'), ('Dorothy', 'son', 'Roberto')]}, {('Robert', 'sister', 'Dorothy'): [('Robert', 'son', 'John'), ('John', 'aunt', 'Dorothy')]}, {('Robert', 'son', 'John'): [('Robert', 'daughter', 'Michelle'), ('Michelle', 'brother', 'John')]}]
['daughter', 'brother', 'aunt', 'son']