[Clarence] took his grandson [Milton] to the mall. [Milton]'s sister [Jennifer] was jealous.
('Jennifer', 'Clarence')
[Clarence] took his grandson [Milton] to the mall. [Milton]'s sister [Jennifer] was jealous.
[{('Jennifer', 'grandfather', 'Clarence'): [('Jennifer', 'brother', 'Milton'), ('Milton', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']