[Dale] took his daughter [Belva] to the zoo on Saturday. [Dale]'s wife [Theresa] could n't come as she had to work that day.
('Theresa', 'Belva')
[Dale] took his daughter [Belva] to the zoo on Saturday. [Dale]'s wife [Theresa] could n't come as she had to work that day.
[{('Theresa', 'daughter', 'Belva'): [('Theresa', 'husband', 'Dale'), ('Dale', 'daughter', 'Belva')]}]
['husband', 'daughter']