[Amy] has been waiting around all day for her son, [Dennis]. [Clarence] took his grandson [Dennis] to the store to buy some new books.
('Amy', 'Clarence')
[Amy] has been waiting around all day for her son, [Dennis]. [Clarence] took his grandson [Dennis] to the store to buy some new books.
[{('Amy', 'father', 'Clarence'): [('Amy', 'son', 'Dennis'), ('Dennis', 'grandfather', 'Clarence')]}]
['son', 'grandfather']