[Nicholas] and his daughter [Emily] went with her grandfather [Clarence] to the bowling alley.
('Nicholas', 'Clarence')
[Nicholas] and his daughter [Emily] went with her grandfather [Clarence] to the bowling alley.
[{('Nicholas', 'father', 'Clarence'): [('Nicholas', 'daughter', 'Emily'), ('Emily', 'grandfather', 'Clarence')]}]
['daughter', 'grandfather']