[Dennis] plays piano so good that his grandfather [Clarence] gifted him a new set this winter. [Jennifer] borrowed some money from her brother [Dennis].
('Jennifer', 'Clarence')
[Jennifer] borrowed some money from her brother [Dennis]. [Dennis] plays piano so good that his grandfather [Clarence] gifted him a new set this winter.
[{('Jennifer', 'grandfather', 'Clarence'): [('Jennifer', 'brother', 'Dennis'), ('Dennis', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']