[Theresa] took her father [Clarence] and her daughter [Belva] to the park
('Belva', 'Clarence')
[Theresa] took her father [Clarence] and her daughter [Belva] to the park
[{('Belva', 'grandfather', 'Clarence'): [('Belva', 'mother', 'Theresa'), ('Theresa', 'father', 'Clarence')]}]
['mother', 'father']