[Rosetta] and her father [Dale] love to go skiing. Often, [Dale] will invite his mother [Ashley] to join them.
('Rosetta', 'Ashley')
[Rosetta] and her father [Dale] love to go skiing. Often, [Dale] will invite his mother [Ashley] to join them.
[{('Rosetta', 'grandmother', 'Ashley'): [('Rosetta', 'father', 'Dale'), ('Dale', 'mother', 'Ashley')]}]
['father', 'mother']