[Allan] was so excited to introduce his new girlfriend to his mother, [Marie]. [Ronald] and his father [Robert] went jogging by the lake. [Ronald] loves his mother [Marie] very much. [Robert] and his brother [Pedro] got into a fight over who was the better basketball player.
('Pedro', 'Allan')
[Robert] and his brother [Pedro] got into a fight over who was the better basketball player. [Ronald] and his father [Robert] went jogging by the lake. [Ronald] loves his mother [Marie] very much. [Allan] was so excited to introduce his new girlfriend to his mother, [Marie].
[{('Pedro', 'nephew', 'Allan'): [('Pedro', 'brother', 'Robert'), ('Robert', 'son', 'Allan')]}, {('Robert', 'son', 'Allan'): [('Robert', 'son', 'Ronald'), ('Ronald', 'brother', 'Allan')]}, {('Ronald', 'brother', 'Allan'): [('Ronald', 'mother', 'Marie'), ('Marie', 'son', 'Allan')]}]
['brother', 'son', 'mother', 'son']