[Herman] and his daughter [Flavia] went with her grandfather [Roy] to the bowling alley.
('Herman', 'Roy')
[Herman] and his daughter [Flavia] went with her grandfather [Roy] to the bowling alley.
[{('Herman', 'father', 'Roy'): [('Herman', 'daughter', 'Flavia'), ('Flavia', 'grandfather', 'Roy')]}]