[Louis] and his brother [Pedro] were rarely seen apart. [Allan] was having an argument with her sister, [Elsie]. [Louis] bought his brother [Robert] a present. It was to congratulate him on becoming a father to his new son, [Elsie].
('Allan', 'Pedro')
[Allan] was having an argument with her sister, [Elsie]. [Louis] bought his brother [Robert] a present. It was to congratulate him on becoming a father to his new son, [Elsie]. [Louis] and his brother [Pedro] were rarely seen apart.
[{('Allan', 'uncle', 'Pedro'): [('Allan', 'father', 'Robert'), ('Robert', 'brother', 'Pedro')]}, {('Robert', 'brother', 'Pedro'): [('Robert', 'brother', 'Louis'), ('Louis', 'brother', 'Pedro')]}, {('Allan', 'father', 'Robert'): [('Allan', 'sister', 'Elsie'), ('Elsie', 'father', 'Robert')]}]
['sister', 'father', 'brother', 'brother']