[Robert] ate dinner with his wife [Marie]. [Harold] took his granddaughter [Bettie] to the movies yesterday and they got popcorn and candy before the movie starated. [Antonio] and his daughter, [Bettie] go to concerts every week. [Antonio] and his sister [Marie] stood in line at the fair.
('Robert', 'Harold')
[Robert] ate dinner with his wife [Marie]. [Antonio] and his sister [Marie] stood in line at the fair. [Antonio] and his daughter, [Bettie] go to concerts every week. [Harold] took his granddaughter [Bettie] to the movies yesterday and they got popcorn and candy before the movie starated.
[{('Robert', 'father-in-law', 'Harold'): [('Robert', 'wife', 'Marie'), ('Marie', 'father', 'Harold')]}, {('Marie', 'father', 'Harold'): [('Marie', 'brother', 'Antonio'), ('Antonio', 'father', 'Harold')]}, {('Antonio', 'father', 'Harold'): [('Antonio', 'daughter', 'Bettie'), ('Bettie', 'grandfather', 'Harold')]}]
['wife', 'brother', 'daughter', 'grandfather']