[Louis] took his wife [Beverly] to Hawaii. [Louis]'s dad [Harold] was worried because he had no idea where they were. [Samuel] went fishing with is uncle [Pedro] last weekend. [Beverly] takes her son [Samuel] to the park every Saturday.
('Harold', 'Pedro')
[Louis] took his wife [Beverly] to Hawaii. [Louis]'s dad [Harold] was worried because he had no idea where they were. [Beverly] takes her son [Samuel] to the park every Saturday. [Samuel] went fishing with is uncle [Pedro] last weekend.
[{('Harold', 'son', 'Pedro'): [('Harold', 'son', 'Louis'), ('Louis', 'brother', 'Pedro')]}, {('Louis', 'brother', 'Pedro'): [('Louis', 'son', 'Samuel'), ('Samuel', 'uncle', 'Pedro')]}, {('Louis', 'son', 'Samuel'): [('Louis', 'wife', 'Beverly'), ('Beverly', 'son', 'Samuel')]}]
['son', 'wife', 'son', 'uncle']