[Tracy] and her daughter [Bettie] went to the park. [Bettie] did not invite her brother [Bernardo] to go to the park. [Bobby] was happy to see his aunt [Dorothy]. [Bobby] loved his mother, [Tracy].
('Bernardo', 'Dorothy')
[Tracy] and her daughter [Bettie] went to the park. [Bettie] did not invite her brother [Bernardo] to go to the park. [Bobby] loved his mother, [Tracy]. [Bobby] was happy to see his aunt [Dorothy].
[{('Bernardo', 'aunt', 'Dorothy'): [('Bernardo', 'mother', 'Tracy'), ('Tracy', 'sister', 'Dorothy')]}, {('Tracy', 'sister', 'Dorothy'): [('Tracy', 'son', 'Bobby'), ('Bobby', 'aunt', 'Dorothy')]}, {('Bernardo', 'mother', 'Tracy'): [('Bernardo', 'sister', 'Bettie'), ('Bettie', 'mother', 'Tracy')]}]
['sister', 'mother', 'son', 'aunt']