[Laura] invited her father [Antonio] to her high school father daughter dance. [Bernardo] is helping his mother [Tracy] pick out a gift. [Tracy] wants to buy something special for her sister [Marie]. [Bernardo] asked his father, [Antonio], to help him with his math homework. [Antonio] could n't, because he was lousy at math himself.
('Marie', 'Laura')
[Bernardo] is helping his mother [Tracy] pick out a gift. [Tracy] wants to buy something special for her sister [Marie]. [Bernardo] asked his father, [Antonio], to help him with his math homework. [Antonio] could n't, because he was lousy at math himself. [Laura] invited her father [Antonio] to her high school father daughter dance.
[{('Marie', 'niece', 'Laura'): [('Marie', 'sister', 'Tracy'), ('Tracy', 'daughter', 'Laura')]}, {('Tracy', 'daughter', 'Laura'): [('Tracy', 'son', 'Bernardo'), ('Bernardo', 'sister', 'Laura')]}, {('Bernardo', 'sister', 'Laura'): [('Bernardo', 'father', 'Antonio'), ('Antonio', 'daughter', 'Laura')]}]
['sister', 'son', 'father', 'daughter']