[George] was taking his daughter [April] to the mall to buy some new shoes. [Ann], [April]'s sister, was glad because she finally had the house all to herself for a few hours.
('George', 'Ann')
[George] was taking his daughter [April] to the mall to buy some new shoes. [Ann], [April]'s sister, was glad because she finally had the house all to herself for a few hours.
[{('George', 'daughter', 'Ann'): [('George', 'daughter', 'April'), ('April', 'sister', 'Ann')]}]
['daughter', 'sister']