[Jerry] wanted to stay with his mother [Lillian] for the weekend, but she insisted that he visit his grandfather [Clarence] instead.
('Lillian', 'Clarence')
[Jerry] wanted to stay with his mother [Lillian] for the weekend, but she insisted that he visit his grandfather [Clarence] instead.
[{('Lillian', 'father', 'Clarence'): [('Lillian', 'son', 'Jerry'), ('Jerry', 'grandfather', 'Clarence')]}]
['son', 'grandfather']