[Clarence] is the proud grandfather of [Douglas]. [Ann] has a brother named [Douglas], even though they have not seen each other for years.
('Ann', 'Clarence')
[Clarence] is the proud grandfather of [Douglas]. [Ann] has a brother named [Douglas], even though they have not seen each other for years.
[{('Ann', 'grandfather', 'Clarence'): [('Ann', 'brother', 'Douglas'), ('Douglas', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']