[Tina] picked up her brother [Theodore] from the airport. Then they went to her sister [Mildred]'s house for lunch. [James] rushed to see his grandmother, [Mildred], in the hospital.
('Theodore', 'James')
[Tina] picked up her brother [Theodore] from the airport. Then they went to her sister [Mildred]'s house for lunch. [James] rushed to see his grandmother, [Mildred], in the hospital.
[{('Theodore', 'grandfather', 'James'): [('Theodore', 'sister', 'Tina'), ('Tina', 'grandfather', 'James')]}, {('Tina', 'grandfather', 'James'): [('Tina', 'sister', 'Mildred'), ('Mildred', 'grandfather', 'James')]}]
['sister', 'sister', 'grandfather']