[Ann]'s father [George] is taking her to a movie because she got good grades. [Jerry] asked his father, [George], to help him with his math homework. [George] could n't, because he was lousy at math himself.
('Jerry', 'Ann')
[Jerry] asked his father, [George], to help him with his math homework. [George] could n't, because he was lousy at math himself. [Ann]'s father [George] is taking her to a movie because she got good grades.
[{('Jerry', 'sister', 'Ann'): [('Jerry', 'father', 'George'), ('George', 'daughter', 'Ann')]}]
['father', 'daughter']