[Kevin] asked his father, [Antonio], to help him with his math homework. [Antonio] could n't, because he was lousy at math himself. [Marie] went to the arcade with her niece, [Laura]. They had lots of fun playing together. [Antonio]'s wife, [Tracy], went to the library with her daughter, [Laura].
('Kevin', 'Marie')
[Kevin] asked his father, [Antonio], to help him with his math homework. [Antonio] could n't, because he was lousy at math himself. [Antonio]'s wife, [Tracy], went to the library with her daughter, [Laura]. [Marie] went to the arcade with her niece, [Laura]. They had lots of fun playing together.
[{('Kevin', 'aunt', 'Marie'): [('Kevin', 'father', 'Antonio'), ('Antonio', 'sister', 'Marie')]}, {('Antonio', 'sister', 'Marie'): [('Antonio', 'daughter', 'Laura'), ('Laura', 'aunt', 'Marie')]}, {('Antonio', 'daughter', 'Laura'): [('Antonio', 'wife', 'Tracy'), ('Tracy', 'daughter', 'Laura')]}]
['father', 'wife', 'daughter', 'aunt']