[Bettie] wanted to go fishing with her dad, [Antonio]. [Antonio] invited his father, [Harold], along as well. [Dorothy] bought some shoes for her father [Harold]. [Dorothy] went car shopping with her brother [Robert].
('Robert', 'Bettie')
[Dorothy] went car shopping with her brother [Robert]. [Dorothy] bought some shoes for her father [Harold]. [Bettie] wanted to go fishing with her dad, [Antonio]. [Antonio] invited his father, [Harold], along as well.
[{('Robert', 'niece', 'Bettie'): [('Robert', 'brother', 'Antonio'), ('Antonio', 'daughter', 'Bettie')]}, {('Robert', 'brother', 'Antonio'): [('Robert', 'father', 'Harold'), ('Harold', 'son', 'Antonio')]}, {('Robert', 'father', 'Harold'): [('Robert', 'sister', 'Dorothy'), ('Dorothy', 'father', 'Harold')]}]
['sister', 'father', 'son', 'daughter']