[Janet]'s grandfather, [Clarence], took her and her brother, [Timothy], to the park.
('Clarence', 'Timothy')
[Janet]'s grandfather, [Clarence], took her and her brother, [Timothy], to the park.
[{('Clarence', 'grandson', 'Timothy'): [('Clarence', 'granddaughter', 'Janet'), ('Janet', 'brother', 'Timothy')]}]
['granddaughter', 'brother']