[Angelica]'s brother [Allan] took her to the fair when she was little. [Allan] also brought his brother [Ronald]. [Ronald] bought a book for his father [Robert]. [Robert] decided to give his son [Ronald], for his birthday, the latest version of Apple watch.
('Angelica', 'Ronald')
[Angelica]'s brother [Allan] took her to the fair when she was little. [Allan] also brought his brother [Ronald]. [Robert] decided to give his son [Ronald], for his birthday, the latest version of Apple watch. [Ronald] bought a book for his father [Robert].
[{('Angelica', 'brother', 'Ronald'): [('Angelica', 'father', 'Robert'), ('Robert', 'son', 'Ronald')]}, {('Angelica', 'father', 'Robert'): [('Angelica', 'brother', 'Allan'), ('Allan', 'father', 'Robert')]}, {('Allan', 'father', 'Robert'): [('Allan', 'brother', 'Ronald'), ('Ronald', 'father', 'Robert')]}]
['brother', 'brother', 'father', 'son']