[Antonio] 'daughter, [Bettie], just made it into grad school. [Robert] asked his father, [Harold], to help him with his math homework. [Harold] could n't, because he was lousy at math himself. [Antonio] took his sister [Marie] out to dinner for her birthday. [Bettie]'s uncle [Robert] was looking forward to visiting for the summer.
('Marie', 'Harold')
[Antonio] took his sister [Marie] out to dinner for her birthday. [Antonio] 'daughter, [Bettie], just made it into grad school. [Bettie]'s uncle [Robert] was looking forward to visiting for the summer. [Robert] asked his father, [Harold], to help him with his math homework. [Harold] could n't, because he was lousy at math himself.
[{('Marie', 'father', 'Harold'): [('Marie', 'brother', 'Antonio'), ('Antonio', 'father', 'Harold')]}, {('Antonio', 'father', 'Harold'): [('Antonio', 'brother', 'Robert'), ('Robert', 'father', 'Harold')]}, {('Antonio', 'brother', 'Robert'): [('Antonio', 'daughter', 'Bettie'), ('Bettie', 'uncle', 'Robert')]}]
['brother', 'daughter', 'uncle', 'father']