[Nicholas] is an engineer who loves to take his son [Glen] to the science museum to help him learn about the world [Glen] and his sister [Emily] are going for a walk.
('Nicholas', 'Emily')
[Nicholas] is an engineer who loves to take his son [Glen] to the science museum to help him learn about the world [Glen] and his sister [Emily] are going for a walk.
[{('Nicholas', 'daughter', 'Emily'): [('Nicholas', 'son', 'Glen'), ('Glen', 'sister', 'Emily')]}]
['son', 'sister']