[Rebecca] and her brother [James] went to the movies together. [Rebecca]'s brother [Jeffrey] stopped by his sister [Cheryl]'s house to see [Harold] his Grandfather. [Cheryl] was having a birthday party for [Harold] because she loved her Grandfather.
('James', 'Harold')
[Rebecca] and her brother [James] went to the movies together. [Rebecca]'s brother [Jeffrey] stopped by his sister [Cheryl]'s house to see [Harold] his Grandfather. [Cheryl] was having a birthday party for [Harold] because she loved her Grandfather.
[{('James', 'grandfather', 'Harold'): [('James', 'sister', 'Cheryl'), ('Cheryl', 'grandfather', 'Harold')]}, {('James', 'sister', 'Cheryl'): [('James', 'brother', 'Jeffrey'), ('Jeffrey', 'sister', 'Cheryl')]}, {('James', 'brother', 'Jeffrey'): [('James', 'sister', 'Rebecca'), ('Rebecca', 'brother', 'Jeffrey')]}]
['sister', 'brother', 'sister', 'grandfather']