[Beverly] loves playing chess her son. His name is [Samuel]. [Antonio] took his niece [Heather] fishing Saturday. They caught a couple small fish. [Pedro] spent the day with his sister, [Beverly], and his daughter [Heather].
('Samuel', 'Antonio')
[Beverly] loves playing chess her son. His name is [Samuel]. [Pedro] spent the day with his sister, [Beverly], and his daughter [Heather]. [Antonio] took his niece [Heather] fishing Saturday. They caught a couple small fish.
[{('Samuel', 'uncle', 'Antonio'): [('Samuel', 'mother', 'Beverly'), ('Beverly', 'brother', 'Antonio')]}, {('Beverly', 'brother', 'Antonio'): [('Beverly', 'brother', 'Pedro'), ('Pedro', 'brother', 'Antonio')]}, {('Pedro', 'brother', 'Antonio'): [('Pedro', 'daughter', 'Heather'), ('Heather', 'uncle', 'Antonio')]}]
['mother', 'brother', 'daughter', 'uncle']