[George] asked his daughter, [Janet], where her sister [Ann] was. Emille said she did n't know.
('George', 'Ann')
[George] asked his daughter, [Janet], where her sister [Ann] was. Emille said she did n't know.
[{('George', 'daughter', 'Ann'): [('George', 'daughter', 'Janet'), ('Janet', 'sister', 'Ann')]}]
['daughter', 'sister']