[Jeffrey] and his brother [James] went out for lunch. [Jeffrey] had a burger, and [James] had a chicken sandwich. [James] and his sister [Rebecca] got their mother [Rebecca] a new computer for her birthday. She really liked it. [Rebecca] asked her mother, [Dorothy], to help her with her math homework. [Dorothy] said she would, as soon as she put her son [Roberto] to bed.
('Jeffrey', 'Roberto')
[Jeffrey] and his brother [James] went out for lunch. [Jeffrey] had a burger, and [James] had a chicken sandwich. [James] and his sister [Rebecca] got their mother [Rebecca] a new computer for her birthday. She really liked it. [Rebecca] asked her mother, [Dorothy], to help her with her math homework. [Dorothy] said she would, as soon as she put her son [Roberto] to bed.
[{('Jeffrey', 'brother', 'Roberto'): [('Jeffrey', 'brother', 'James'), ('James', 'brother', 'Roberto')]}, {('James', 'brother', 'Roberto'): [('James', 'mother', 'Dorothy'), ('Dorothy', 'son', 'Roberto')]}, {('James', 'mother', 'Dorothy'): [('James', 'sister', 'Rebecca'), ('Rebecca', 'mother', 'Dorothy')]}]
['brother', 'sister', 'mother', 'son']