[Herman] went to pick up his son [Guy] from the baseball practice. [Guy] and his grandfather, [Roy], went to watch the ball game together.
('Herman', 'Roy')
[Herman] went to pick up his son [Guy] from the baseball practice. [Guy] and his grandfather, [Roy], went to watch the ball game together.
[{('Herman', 'father', 'Roy'): [('Herman', 'son', 'Guy'), ('Guy', 'grandfather', 'Roy')]}]