[Lillian] dropped off her son [John] at basketball practice. After, she went to pick up her daughter, [Ann], from the pool.
('John', 'Ann')
[Lillian] dropped off her son [John] at basketball practice. After, she went to pick up her daughter, [Ann], from the pool.
[{('John', 'sister', 'Ann'): [('John', 'mother', 'Lillian'), ('Lillian', 'daughter', 'Ann')]}]
['mother', 'daughter']