[Douglas]'s uncle [Dale] used to be the drummer for Toto. [George] is an engineer who loves to take his son [Douglas] to the science museum to help him learn about the world
('George', 'Dale')
[George] is an engineer who loves to take his son [Douglas] to the science museum to help him learn about the world [Douglas]'s uncle [Dale] used to be the drummer for Toto.
[{('George', 'brother', 'Dale'): [('George', 'son', 'Douglas'), ('Douglas', 'uncle', 'Dale')]}]
['son', 'uncle']