[Lizzie] went bowling with her brothers [John] and [Mario]. Her brother [Ronald] could n't make it this time. [John] is a very hot guy, but his sister [Lizzie] is even more attractive.
('Lizzie', 'Ronald')
[John] is a very hot guy, but his sister [Lizzie] is even more attractive. [Lizzie] went bowling with her brothers [John] and [Mario]. Her brother [Ronald] could n't make it this time.
[{('Lizzie', 'brother', 'Ronald'): [('Lizzie', 'brother', 'John'), ('John', 'brother', 'Ronald')]}, {('John', 'brother', 'Ronald'): [('John', 'brother', 'Mario'), ('Mario', 'brother', 'Ronald')]}, {('John', 'brother', 'Mario'): [('John', 'sister', 'Lizzie'), ('Lizzie', 'brother', 'Mario')]}]
['brother', 'sister', 'brother', 'brother']