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