[Janet] went to see her grandfather [Clarence] and then they went to pick up her brother [Ann] from school.
('Ann', 'Clarence')
[Janet] went to see her grandfather [Clarence] and then they went to pick up her brother [Ann] from school.
[{('Ann', 'grandfather', 'Clarence'): [('Ann', 'sister', 'Janet'), ('Janet', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']