[Harold] is proud of his son. His name is [Antonio]. [Dorothy] invited her brother [Antonio] to her daughter [Heather]'s engagement party. [Heather] us the daughter of [Pedro] 'wife.
('Pedro', 'Harold')
[Heather] us the daughter of [Pedro] 'wife. [Dorothy] invited her brother [Antonio] to her daughter [Heather]'s engagement party. [Harold] is proud of his son. His name is [Antonio].
[{('Pedro', 'father', 'Harold'): [('Pedro', 'brother', 'Antonio'), ('Antonio', 'father', 'Harold')]}, {('Pedro', 'brother', 'Antonio'): [('Pedro', 'daughter', 'Heather'), ('Heather', 'uncle', 'Antonio')]}, {('Heather', 'uncle', 'Antonio'): [('Heather', 'mother', 'Dorothy'), ('Dorothy', 'brother', 'Antonio')]}]
['daughter', 'mother', 'brother', 'father']