[Dorothy] took her father [Harold] to a concert Friday and her daughter [Rebecca] went with them. [Marie] and her sister [Louis] went to the ice cream shop. [Harold] is frustrated teaching his son how to drive. His son is [Louis].
('Rebecca', 'Marie')
[Dorothy] took her father [Harold] to a concert Friday and her daughter [Rebecca] went with them. [Harold] is frustrated teaching his son how to drive. His son is [Louis]. [Marie] and her sister [Louis] went to the ice cream shop.
[{('Rebecca', 'aunt', 'Marie'): [('Rebecca', 'mother', 'Dorothy'), ('Dorothy', 'sister', 'Marie')]}, {('Dorothy', 'sister', 'Marie'): [('Dorothy', 'brother', 'Louis'), ('Louis', 'sister', 'Marie')]}, {('Dorothy', 'brother', 'Louis'): [('Dorothy', 'father', 'Harold'), ('Harold', 'son', 'Louis')]}]
['mother', 'father', 'son', 'sister']