[Nancy] loves to make cookies for her son. His name is [Robert]. [Clarence] is retired and likes to ride his golf cart around the beach. His grandson [Robert] stayed with him all summer and he loved riding in the golf cart.
('Nancy', 'Clarence')
[Nancy] loves to make cookies for her son. His name is [Robert]. [Clarence] is retired and likes to ride his golf cart around the beach. His grandson [Robert] stayed with him all summer and he loved riding in the golf cart.
[{('Nancy', 'father', 'Clarence'): [('Nancy', 'son', 'Robert'), ('Robert', 'grandfather', 'Clarence')]}]
['son', 'grandfather']