[Clarence] is an engineer who loves to take his son [Dale] to the science museum to help him learn about the world [Dale] went to pick up his daughter [Belva] from school on the last day before summer vacation.
('Clarence', 'Belva')
[Clarence] is an engineer who loves to take his son [Dale] to the science museum to help him learn about the world [Dale] went to pick up his daughter [Belva] from school on the last day before summer vacation.
[{('Clarence', 'granddaughter', 'Belva'): [('Clarence', 'son', 'Dale'), ('Dale', 'daughter', 'Belva')]}]
['son', 'daughter']