[John] and his brother [Douglas] went to the football game together. [Clarence] used to threaten his own children with a wooden spoon as punishment. His daughter's son [Douglas] could not imagine such a thing.
('John', 'Clarence')
[John] and his brother [Douglas] went to the football game together. [Clarence] used to threaten his own children with a wooden spoon as punishment. His daughter's son [Douglas] could not imagine such a thing.
[{('John', 'grandfather', 'Clarence'): [('John', 'brother', 'Douglas'), ('Douglas', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']