[James] went to visit his sister [Cheryl] to the hospital last week. [Dorothy]'s son [Jeffrey] and daughter [Cheryl] went to get ice cream today. [Dorothy]'s son [Jeffrey] missed seeing his mother on the weekends.
('James', 'Dorothy')
[James] went to visit his sister [Cheryl] to the hospital last week. [Dorothy]'s son [Jeffrey] and daughter [Cheryl] went to get ice cream today. [Dorothy]'s son [Jeffrey] missed seeing his mother on the weekends.
[{('James', 'mother', 'Dorothy'): [('James', 'brother', 'Jeffrey'), ('Jeffrey', 'mother', 'Dorothy')]}, {('James', 'brother', 'Jeffrey'): [('James', 'sister', 'Cheryl'), ('Cheryl', 'brother', 'Jeffrey')]}, {('Cheryl', 'brother', 'Jeffrey'): [('Cheryl', 'mother', 'Dorothy'), ('Dorothy', 'son', 'Jeffrey')]}]
['sister', 'mother', 'son', 'mother']