[Amy] dropped her daughter, [Jennifer], off at [George]'s house. [George] was happy to babysit the child for his sister, [Amy].
('George', 'Jennifer')
[Amy] dropped her daughter, [Jennifer], off at [George]'s house. [George] was happy to babysit the child for his sister, [Amy].
[{('George', 'niece', 'Jennifer'): [('George', 'sister', 'Amy'), ('Amy', 'daughter', 'Jennifer')]}]
['sister', 'daughter']