[Pedro] took his niece [Angelica] fishing Saturday. They caught a couple small fish. [Harold] went on a roadtrip with his youngest child, [Robert]. [Tracy] is a sister of [Pedro]. [Robert] is [Angelica]'s father.
('Harold', 'Tracy')
[Harold] went on a roadtrip with his youngest child, [Robert]. [Robert] is [Angelica]'s father. [Pedro] took his niece [Angelica] fishing Saturday. They caught a couple small fish. [Tracy] is a sister of [Pedro].
[{('Harold', 'daughter', 'Tracy'): [('Harold', 'son', 'Pedro'), ('Pedro', 'sister', 'Tracy')]}, {('Harold', 'son', 'Pedro'): [('Harold', 'son', 'Robert'), ('Robert', 'brother', 'Pedro')]}, {('Robert', 'brother', 'Pedro'): [('Robert', 'daughter', 'Angelica'), ('Angelica', 'uncle', 'Pedro')]}]
['son', 'daughter', 'uncle', 'sister']