[Annie] asked her father [Pedro] if she could spend the night at her friend's house. [Cheryl] took her uncle [Robert] to the grocery store. [Pedro] asked his daughter, [Annie], where her sister [Cheryl] was. Emille said she did n't know.
('Annie', 'Robert')
[Annie] asked her father [Pedro] if she could spend the night at her friend's house. [Pedro] asked his daughter, [Annie], where her sister [Cheryl] was. Emille said she did n't know. [Cheryl] took her uncle [Robert] to the grocery store.
[{('Annie', 'uncle', 'Robert'): [('Annie', 'father', 'Pedro'), ('Pedro', 'brother', 'Robert')]}, {('Pedro', 'brother', 'Robert'): [('Pedro', 'daughter', 'Cheryl'), ('Cheryl', 'uncle', 'Robert')]}, {('Pedro', 'daughter', 'Cheryl'): [('Pedro', 'daughter', 'Annie'), ('Annie', 'sister', 'Cheryl')]}]
['father', 'daughter', 'sister', 'uncle']