[Charlotte] went to the lake to meet her father [Dale] and her grandfather [Clarence].
('Dale', 'Clarence')
[Charlotte] went to the lake to meet her father [Dale] and her grandfather [Clarence].
[{('Dale', 'father', 'Clarence'): [('Dale', 'daughter', 'Charlotte'), ('Charlotte', 'grandfather', 'Clarence')]}]
['daughter', 'grandfather']