[Dorothy] wanted her daughter, [Rebecca], to go shopping with her. [Rebecca] invited her sister, [Cheryl]. [James] got a gift for his brother calvin. [Jeffrey]'s mother, [Dorothy], did n't like the gift and took it away from him.
('James', 'Cheryl')
[James] got a gift for his brother calvin. [Jeffrey]'s mother, [Dorothy], did n't like the gift and took it away from him. [Dorothy] wanted her daughter, [Rebecca], to go shopping with her. [Rebecca] invited her sister, [Cheryl].
[{('James', 'sister', 'Cheryl'): [('James', 'brother', 'Jeffrey'), ('Jeffrey', 'sister', 'Cheryl')]}, {('Jeffrey', 'sister', 'Cheryl'): [('Jeffrey', 'mother', 'Dorothy'), ('Dorothy', 'daughter', 'Cheryl')]}, {('Dorothy', 'daughter', 'Cheryl'): [('Dorothy', 'daughter', 'Rebecca'), ('Rebecca', 'sister', 'Cheryl')]}]
['brother', 'mother', 'daughter', 'sister']