[Pedro] read his daughter [Cheryl] a bedtime story. Soon she was fast asleep. [Dorothy] has two sons, [Jeffrey] and [Jerome], and one daughter, [Cheryl]. [Cheryl] was fighting with her brother [Jerome].
('Pedro', 'Jeffrey')
[Pedro] read his daughter [Cheryl] a bedtime story. Soon she was fast asleep. [Dorothy] has two sons, [Jeffrey] and [Jerome], and one daughter, [Cheryl]. [Cheryl] was fighting with her brother [Jerome].
[{('Pedro', 'son', 'Jeffrey'): [('Pedro', 'son', 'Jerome'), ('Jerome', 'brother', 'Jeffrey')]}, {('Pedro', 'son', 'Jerome'): [('Pedro', 'daughter', 'Cheryl'), ('Cheryl', 'brother', 'Jerome')]}, {('Jerome', 'brother', 'Jeffrey'): [('Jerome', 'mother', 'Dorothy'), ('Dorothy', 'son', 'Jeffrey')]}]
['daughter', 'brother', 'mother', 'son']