[Douglas] and his father [George] went to town for some supplies. While in town they ran into [George]'s brother, [Wayne].
('Douglas', 'Wayne')
[Douglas] and his father [George] went to town for some supplies. While in town they ran into [George]'s brother, [Wayne].
[{('Douglas', 'uncle', 'Wayne'): [('Douglas', 'father', 'George'), ('George', 'brother', 'Wayne')]}]
['father', 'brother']