[James] met his uncle, [Louis], at the zoo for some fun. [Dorothy] cooked dinner for her son [James] and her father [Harold]. [Louis] and his sister [Marie] are going for a walk.
('Harold', 'Marie')
[Dorothy] cooked dinner for her son [James] and her father [Harold]. [James] met his uncle, [Louis], at the zoo for some fun. [Louis] and his sister [Marie] are going for a walk.
[{('Harold', 'daughter', 'Marie'): [('Harold', 'son', 'Louis'), ('Louis', 'sister', 'Marie')]}, {('Harold', 'son', 'Louis'): [('Harold', 'daughter', 'Dorothy'), ('Dorothy', 'brother', 'Louis')]}, {('Dorothy', 'brother', 'Louis'): [('Dorothy', 'son', 'James'), ('James', 'uncle', 'Louis')]}]
['daughter', 'son', 'uncle', 'sister']