[Robert] took his niece [Rebecca] to the park to walk her dog. [Jeffrey]'s parents, [Pedro] and [Dorothy], threw him a surprise party for his birthday. [Pedro]'s daughter [Rebecca] made a mental note to be out of town for her birthday!
('Dorothy', 'Robert')
[Jeffrey]'s parents, [Pedro] and [Dorothy], threw him a surprise party for his birthday. [Pedro]'s daughter [Rebecca] made a mental note to be out of town for her birthday! [Robert] took his niece [Rebecca] to the park to walk her dog.
[{('Dorothy', 'brother', 'Robert'): [('Dorothy', 'son', 'Jeffrey'), ('Jeffrey', 'uncle', 'Robert')]}, {('Jeffrey', 'uncle', 'Robert'): [('Jeffrey', 'father', 'Pedro'), ('Pedro', 'brother', 'Robert')]}, {('Pedro', 'brother', 'Robert'): [('Pedro', 'daughter', 'Rebecca'), ('Rebecca', 'uncle', 'Robert')]}]
['son', 'father', 'daughter', 'uncle']