[Dale] is taking his daughter [Charlotte] out for lunch. [Charlotte] received a very nice letter from her grandfather [Clarence].
('Dale', 'Clarence')
[Dale] is taking his daughter [Charlotte] out for lunch. [Charlotte] received a very nice letter from her grandfather [Clarence].
[{('Dale', 'father', 'Clarence'): [('Dale', 'daughter', 'Charlotte'), ('Charlotte', 'grandfather', 'Clarence')]}]
['daughter', 'grandfather']